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╔═════════════════════════════════════════════════════════════════════════════╗ ║ McDonnell Douglas Corporation ║ ╚═════════════════════════════════════════════════════════════════════════════╝ ┌─────────────────────────────────────────────────────────────────────────────┐ │ DFDdraw 3.0 │ │ │ │ Copyright (c) 1991 │ │ McDonnell Douglas Corporation │ │ All Rights Reserved │ │ │ │DFDdraw is a proprietary product of McDonnell Douglas Corporation (MDC). You │ │are hereby authorized to use DFDdraw free of charge. Please note, however, │ │that MDC makes no warranty as the merchantability or fitness for purpose of │ │DFDdraw whether such purpose has been made known or not. MDC does not provide│ │maintenance or support for DFDdraw. │ │ │ │MDC ACCEPTS NO LIABILITY FOR DFDdraw AND HEREBY EXPRESSLY EXCLUDES LIABILITY │ │FOR DAMAGES WHETHER DIRECT OR INDIRECT AND WHETHER ARISING IN CONTRACT, TORT,│ │NEGLIGENCE OR ANY OTHER LEGAL OR EQUITABLE THEORY ARISING FROM USERS USE OF │ │DFDdraw. │ │ │ │DFDdraw is an entry-level McDonnell Douglas CASE tool offered without charge │ │to further the use and understanding of CASE technology.For information about│ │commercially available MDC system engineering products (ProKit*WORKBENCH, │ │PRO-IV, STRADIS) use the registration form provided with this software or │ │call 1-(800)-225-7760. Outside the U.S. and Canada, call London (0442)232424.│ │ │ │ **************** THIS PRODUCT MAY NOT BE RESOLD ***************** │ │ │ └─────────────────────────────────────────────────────────────────────────────┘ DFDdraw Table of Contents 1. Introduction 2. System Requirements Hardware Requirements Hardware Recommendations Supported Output Devices 3. Setting Configuration 4. General Procedures Returning to a Higher Level Menu Aborting a Command Controlling the Graphics Locator Selecting a Sequence of Points Special Functions Pan Zoom Full Restore 1 Level Restore 5. Options Recalling an Existing Diagram Creating a New Diagram Deleting an Existing Diagram Renaming an Existing Diagram Copying an Existing Diagram Listing the Directory Files Changing the Directory Changing the Default Drive Terminating Diagram Processing Option Summary 6. Add/Edit Menu Add Menu External Entities (EE) Process (PR) Data Store (DS) Data Flow (DF) Bifurcated Double-Headed Diagram Boundary (BOUND) Border (BORDR) Text Exclusive OR (OR) Logical AND (AND) Off-Page Connector (CON) Exit Add Function Summary Edit Menu Move Delete Change Change Text Menu Change Boundary (BOU) Menu Change Border (BOR) Menu Change Data Flow (DF) Menu Change Data Store (DS) Menu Change Process (PR) Menu Change External Entity (EE) Menu Duplicate Group Edit Size Highlight Level Plot Edit Function Summary 7. Plotting/Printing Plot Color Definitions Print 8. Using a Mouse Menu Selection Zoom Function Graphic Editing General Notes 9. Error Messages INTRODUCTION DFDdraw Version 3.0 is a graphics software package designed to create data flow diagrams quickly and easily on your personal computer system. A data flow is a graphic representation of data flowing through a system. Data flow diagrams consist of: 1. EXTERNAL ENTITY - source or destination of data - represented by a square 2. PROCESS - transforms flows of data - represented by upright rounded rectangle 3. DATA FLOW - identifies flow of data - represented by line with arrowhead showing direction of flow 4. DATA STORE - defines data stored between processes - represented by a pair of horizontal parallel lines closed at one end A sample data flow diagram is included, displaying available symbols. See 'Recalling an Existing Diagram' under OPTIONS for the steps required to load and view the diagram 'SAMPLE'. This DFDdraw User Guide is designed to provide you with the necessary instructions for creating data flow diagrams on a personal computer system. It is divided into nine sections. A description of each section follows: INTRODUCTION - This section describes the intended use of the DFDdraw software package. SYSTEM REQUIREMENTS - This section describes the type of personal computer system required to use the DFDdraw software package. SETTING CONFIGURATION - This section outlines the steps you must take prior to using DFDdraw. GENERAL PROCEDURES - This section describes the general interactive procedures used during DFDdraw execution. OPTIONS - This section describes the different capabilities available to you with DFDdraw. ADD/EDIT MENUS - This section describes the menus available to you in creating the detail elements that make up the data flow diagrams. PLOTTING/PRINTING - This section describes DFDdraw's plot/print capabilities. USING A MOUSE - This section describes usage of a mouse with DFDdraw. ERROR MESSAGES - This section lists error messages, common causes and solutions for each. SYSTEM REQUIREMENTS What hardware is required? 1. Any MS-DOS PC or clone (8088, 80286, 80386, 80486, 80???). 2. At least one floppy drive or a hard disk. 3. MS-DOS or PC-DOS, Level 2.0 or higher. 4. Monitor and graphics card. The following chart lists the monitor/card configuration that DFDdraw supports indicating the resolution and number of colors that are available with the identified equipment. CARD/MONITOR DISPLAY ------------ --------------------------------------------- APA or XGA 720 x 350 2 colors (IBM 3270 w/5272 monitor) CGA (LoRes) 320 x 200 4 colors CGA (HiRes) 640 x 200 2 colors EGA 640 x 350 4 colors (16 with extra 64K) HERCULES 720 x 348 2 colors (monochrome monitor) MCGA 640 x 480 2 colors TECMAR (color) 640 x 200 16 colors (CGA monitor) TECMAR (mono) 720 x 352 2 colors (monochrome monitor) VGA 640 x 480 16 colors 5. An 8087, 80287, or 80387 math co-processor is optional. A math co-processor will dramatically increase the speed of drawing and editing your data flow diagrams by a factor of 4 to 6. What do we recommend? There are several configurations that will give you equally high resolution graphics. However to take advantage of this resolution plus color, we recommend the following: EGA or VGA Color Monitor and video card 80286 or 80386 PC with minimum of 320KB of RAM memory 80287 or 80387 Math Co-Processor chip. What Output devices can I use? DFDdraw also supports a wide range of output devices. These include: Printers: Epson-(narrow) FX and RX Epson-(wide) FX, RX, and LQ1500 Toshiba-P321, P351, P1350, and P1351 IBM-5152 and Proprinter Star Micronics-Delta 10 and Delta 15 OKIDATA-ML92, ML93 (need plug and play) Hewlett Packard Laser Jet- Plus, 500+, Series II, and Series III Hewlett Packard Deskjet Plotters: Hewlett Packard-7220, 7470A, 7475A, 7550A, ColorPro, Draftmaster IBM-7371, 7372 Sweet Pea-Six-Shooter Pointing Devices Microsoft Mouse Mouse Systems PC Mouse SETTING CONFIGURATION DFDdraw as supplied, assumes that your personal computer system is equipped with the following: CGA Color Monitor CGA Graphics card Epson FX100 Printer HP 7475A plotter If your system configuration differs, you must modify the DFDdraw.BAT file to match your configuration. How do I change DFDdraw to match may configuration? You can modify the DFDdraw startup file to match your system by editing the file named "DFDDRAW.BAT". The DFDDRAW.BAT file consists of three lines: SET NO87=Y ECHO OFF PROLOG IBMCGMA1 EPSFX100 HP-7475A | | | | Pos. 1 8 17 26 Edit the DFDDRAW.BAT file using an ASCII editor, as shown in the following examples. If you have a math co-processor installed, remove the line containing SET NO87=Y. Refer to Driver Tables on the following 2 pages for your options. Example 1 If your system has an EPSON FX80 printer but no plotter, change the third line of the DFDDRAW.BAT file to read: PROLOG IBMCGMA1 EPSFX080 Example 2 If your system has a Hewlett-Packard 7470A or 7475A plotter but no printer, change the third line of DFDDRAW.BAT file to read: PROLOG IBMCGMA1 HP-7470A or PROLOG IBMCGMA1 HP-7475A Note: When a printer is not specified, you must insert ten blanks between "IBMCGMA1" and the plotter field. A printer and/or a plotter can be specified, even if not present, and will not cause problems unless the device is selected for printer and/or plotting. Example 3 If your system has a VGA monitor, HP LaserJet series III printer, and a HP 7475A plotter, change the third line of the DFDDRAW.BAT file to read: PROLOG PS2-VGA1 HPLA1-II HP-7550A Note: The HP LaserJet series II and III use the same driver (HPLA1-II) Monitor Driver Table ------------------------------------------------------------------------------- Monitor--> CGA 5272 MCGA EGA VGA Color Monitor Monochrome Monochrome Color Color Video Card ------------------------------------------------------------------------------- CGA Lores Color IBMCGMA1 CGA Hires Color IBMCGMA2 EGA IBM-EGA1 IBM-EGA1 Hercules HERC-HGC MCGA PS2-MCGA Tecmar TECMARGM TECMARGM APA(IBM 3270) IBM-APA1 Monochrome VGA PS2-VGA1 ------------------------------------------------------------------------------- Printer Driver Table ------------------------------------------------------------------------------- Printer Driver ------------------------------------------------------------------------------- Epson-(Narrow) FX and RX EPSFX080 Epson-(wide) FX, RX, and LQ1500 EPSFX100 Hewlett Packard-(8 1/2 x 11) LJ, LJ+, LJ500+ HPLASER1 Hewlett Packard-(8 1/2 x 14) LJ+, LJ500+ HPLASER2 Hewlett Packard-(8 1/2 x 11) LJ-II, III HPLA1-II Hewlett Packard-(8 1/2 x 14) LJ-II, III HPLA2-II Hewlett Packard-DeskJet HPLA1-II IBM-5152 DELTA-10 IBM-(Narrow) Proprinter EPSFX080 IBM-(Wide) Proprinter EPSFX100 OKIDATA-ML92 DELTA-10 OKIDATA-ML93 DELTA-15 Star Micronics-Delta 10 DELTA-10 Star Micronics-Delta 15 DELTA-15 Toshiba-P351, P1351,and P1350 TOSH-351 Toshiba-P321 TOSH-321 ------------------------------------------------------------------------------- Note: 1. OKIDATA printers require plug and play. 2. Toshiba P1350 and P1351 need to be set to undirectional. 3. Hewlett-Packard- Due to insufficient memory in the printer, the HP LaserJet only supports standard resolution (CTRL F5). HPLJ+ and HPLJ 500+ will support both standard and high resolution print (CTRL F6). The HPLJ II and III printers must have at least 2 MB of memory for the high resolution print. Plotter Driver Table ------------------------------------------------------------------------------- Plotter Driver ------------------------------------------------------------------------------- Hewlett Packard 7220 HP-7220C Hewlett Packard 7470-A HP-7470A Hewlett Packard 7475-A HP-7475A Hewlett Packard 7550-A HP-7550A Hewlett Packard ColorPro HP-7440A Hewlett Packard Draftmaster HP-7585A IBM 7371 HP-7470A IBM 7372 HP-7475A Sweet Pea Six-Shooter HP-7475A ------------------------------------------------------------------------------- GENERAL PROCEDURES DFDdraw is a menu-driven system, with menu options selected via the function keys (F1, F2, etc.). In some cases, selecting a menu option will cause a new menu to replace the original menu. RETURNING TO A HIGHER LEVEL MENU When you finish using the options of a lower level menu, pressing the ESCAPE (Esc) key will terminate the use of that menu and return the original menu to you. ABORTING A COMMAND The CTRL+break key terminates a currently selected menu option. The CTRL+break function, like the ESCAPE (Esc) key, terminates the current menu. CONTROLLING THE GRAPHICS LOCATOR The graphics locator is controlled on the screen using the left, right, up, and down arrow keys found on the numeric keypad. The INS key, located below the numeric keypad, enables you to toggle from low precision to high precision and back. In low precision, the locator moves several pixels each time a movement key is pressed. High precision limits movement to a single pixel. SELECTING A SEQUENCE OF POINTS Some DFDdraw functions require that you select a sequence of points. The graphic locator is used to select these points. Procedure: 1. Move the locator to the first point, and press the ENTER key. Repeat this process until all the points are identified. 2. When no further points are desired, press the ESCAPE (Esc) key to terminate this selection. SPECIAL FUNCTIONS DFDdraw has four special functions that can be employed by pressing the function keys while holding down the Control key. The abbreviations CTRL+F1, CTRL+F2, etc.) are used to indicate this selection technique. The Special Functions are: Function Key ---------------- ------- Pan CTRL+F1 Zoom CTRL+F2 Full Restore CTRL+F3 1 Level Restore CTRL+F4 PAN To use the Pan function, press the CTRL+F1 key. This function allows you to scan a diagram after using the Zoom function. Using the graphic locator, select a reference point on the diagram, press ENTER. Pick second point to determine direction of pan, press ENTER. For example, if you are zoomed in on a section of the diagram and you want to view a part of the diagram which is to the left of the currently viewed area, your second point will be to the right of your first reference point, indicating that you wish to move the diagram to the right in order to view the left section. ZOOM To use the Zoom function, press the CTRL+F2 key. This function provides you with a zoom frame that is moved by using the arrow keys on the numeric keypad. The plus (+) and minus (-) keys allow you to enlarge or reduce the size of the frame. When the frame reaches the desired position and size, press the ENTER key and the framed area will be displayed in full screen size. The zoom function can be evoked multiple times without restoring to the full diagram! FULL RESTORE To use the Full Restore function, press the CTRL+F3 key. This function allows you to return to the full scale diagram after you have zoomed to another level of the diagram. 1 LEVEL RESTORE To use the 1 Level Restore function, press the CTRL+F4 key. This function allows you to return the view that resulted from the previous zoom. OPTIONS RECALLING AN EXISTING DIAGRAM Option: OLD Function Key: F1 Recalls an existing diagram for display or update. Procedure: 1. Press the F1 key, and the system will ask you for the name of diagram. 2. Enter the diagram name, and press the ENTER key. The system identifies the diagram and displays a graphic picture of the diagram on your screen. CREATING A NEW DIAGRAM Option: NEW Function Key: F2 Creates a new diagram. Procedure: 1. Press the F2 key, and the system asks you for the diagram name. When assigning a diagram name, you should follow standard DOS naming conventions (one to eight alphanumeric characters). 2. Enter the name desired, and press the ENTER key. The system then displays the diagram type menu. 3. Select the diagram type by pressing the appropriate function key. F1 - SDFD - System Data Flow Diagram F2 - DDFD - Detail Data Flow Diagram NOTE: The current version does not distinguish between these two types of diagrams. 4. Next, the system asks you for the diagram size. The size option (spec- ified in inches) is in the format of width, then height, separated by a a comma. The default size is 14 inches wide and 9 inches high. If you want to use the default values, simply press the ENTER key. If you want want to set the size, enter the diagram size, and press the ENTER key. After you have identified the diagram type and size, the system displays the ADD/EDIT menu for you to build the new diagram. DELETING AN EXISTING DIAGRAM Option: DELETE Function Key: F3 Deletes an existing diagram. Procedure: 1. Press the F3 key, and the system asks you for the name of the diagram you want to delete. 2. Enter the name of the diagram you wish to delete, and press the ENTER key. At this point, the specified diagram is deleted. RENAMING AN EXISTING DIAGRAM Option: RENAME Function Key: F4 Renames an existing diagram. Procedure: 1. Press the F4 key, and the system asks you for the name of the diagram you want to rename. 2. Enter the diagram name as it is currently defined, and press the ENTER key. The system identifies the diagram to be renamed and asks you for the new name. 3. Enter the new name, following the same naming conventions you would use if you were creating a new diagram, and press the ENTER key. At this point, the name of the existing diagram is changed to the new name. NOTE: The RENAME option does not change the physical drawing of the diagram, just its name. COPYING AN EXISTING DIAGRAM Option: COPY Function Key: F5 Copies an existing diagram. Procedure: 1. Press the F5 key, and the system asks you for the name of the diagram you want to copy. 2. Enter the name of the diagram you want to copy, and press the ENTER key. The system identifies the diagram to be copied and prompts you for the new copy's name. 3. Enter the new copy's name, and press the ENTER key. Remember to use the same naming conventions you would use if you were creating a new diagram. At this point, the system copies the old diagram under the name you specified. LISTING THE DIRECTORY FILES Option: DIRECTORY Function Key: F6 Lists all the current files in the directory. Procedure: 1. Press the F6 key, and the system displays a list of all the file names that exist in the directory. CHANGING THE DIRECTORY Option: CHANGE DIRECTORY Function Key: F7 Establishes another existing directory as the current directory. Procedure: 1. Press the F7 key, and the system asks you for the name of the directory you want to become the current directory. 2. Enter the new directory path name, and press the ENTER key. At this point, the current directory is changed to the one you just specified. CHANGING THE DEFAULT DRIVE Option: CHANGE DRIVE Function Key: F8 Changes your default drive. Procedure: 1. Press the F8 key, and the system asks you for the drive letter. 2. Enter the drive letter (A, B, C, or D), and press the ENTER key. At this point, your default drive is set to the drive you just specified. TERMINATING DIAGRAM PROCESSING Option: EXIT Function Key: ESCAPE (Esc) Procedure: 1. When you have finished diagram processing, you exit the system by pressing the ESCAPE (Esc) key. The system then prompts you to terminate DFDdraw. 2. Answer yes (Y) to terminate and return to DOS. OPTION SUMMARY ---------------------------------------------------------------------- Function Option Description Key Name ---------------------------------------------------------------------- F1 OLD Recalls an existing diagram F2 NEW Creates a new diagram F3 DELETE Deletes an existing diagram F4 RENAME Renames an existing diagram F5 COPY Copies an existing diagram F6 DIRECTORY Lists a directory F7 CHANGE Changes the current directory DIRECTORY F8 CHANGE Changes the default drive DRIVE Esc EXIT Exits DFDdraw ADD/EDIT MENUS The Add/Edit menu is used to create new diagrams or change existing diagrams. You access the Add part of this menu by pressing the function keys (F1, F2, etc.). You access the Edit part of this menu by pressing the func- tion keys while holding down the Alternate (Alt) key (Alt+F1, Alt+F2, etc.). ADD MENU The Add menu is used to add elements to a diagram. Data Flow diagrams can contain up to 300 elements. The elements you can enter are: External Entities (EE) Border (BORDR) Process (PR) Text (TEXT) Data Store (DS) Exclusive OR (OR) Data Flow (DF) Logical AND (AND) Boundary (BOUND) Offpage Connector (CON) EXTERNAL ENTITIES (EE) Function Key: F1 This function allows you to create an EE with the associated element ID and label. Procedure: 1. Press the F1 key, and the system displays the graphic locator for you to select the EE location. 2. Move the graphic locator to a position representing the lower left corner of the EE to be added, and press the ENTER key. The system prompts you for the element ID. 3. Enter the element ID (1 to 11 characters), and press the ENTER key. The system then prompts you for label text. 4. Enter the label text (1 to 11 characters), and press the ENTER key. The system then prompts you for the next line of label text. NOTE: Labels are optional and can contain up to six lines of text. 5. When no more label text lines are desired, press the ENTER key and the system draws the EE. If this EE is a duplicate of an existing EE within this diagram, a hatch line, indicating a duplicate, will be drawn at the lower right end of this EE and all corresponding EEs. PROCESS (PR) Function Key: F2 This function allows you to create the PR with the associated element ID and "implemented-by" text. Procedure: 1. Press the F2 key, and the system displays the graphic locator for you to select the PR location. 2. Move the graphic locator to a position representing the lower left corner of the PR to be added, and press the ENTER key. The system then prompts you for the element ID. 3. Enter the element ID (1 to 11 characters) and press the ENTER key. The system then prompts you for label text. 4. Enter the label text (1 to 11 characters) and press the ENTER key. The system then prompts you for the next line of label text. NOTE: Labels are optional and can contain up to six lines of text. 5. When no more label text lines are desired, press the ENTER key and the system will prompt you for the "implemented-by" text. 6. Enter the "implemented-by" text (1 to 11 characters), and press the ENTER key. The system now draws the PR with the information you requested. NOTE: Implemented-by text is optional. DATA STORE (DS) Function Key: F3 This function allows you to create a DS with an element ID and a label. Procedure: 1. Press the F3 key, and the system displays the graphic locator for you to select the DS location. 2. Move the graphic locator to a position representing the lower left corner of the DS to be added, and press the ENTER key. The system then prompts you for the element ID. 3. Enter the element ID (1 to 11 characters) and press the ENTER key. The system then prompts you for label text. 4. Enter the label text (1 to 40 characters) and press the ENTER key. The system draws the DS to accommodate the label text string. If this is a duplicate DS within the diagram, a triangle is drawn at the left end of this DS and all corresponding DS's. NOTE: The label is optional. DATA FLOW (DF) Function Key: F4 This function allows you to define the DF path, the label, and the search keys. The DF path is defined by identifying the source and destination points and any intervening bend points. Allowable elements for the source or destination of a data flow are: external entries, processes, data stores and offpage connectors. Procedure: 1. Press the F4 key, and the system displays the graphic locator for you to select the soure element. NOTE: The INS key enables you to toggle movement of the graphic locator between high precision and low precision. High precision limits locator movement to one pixel at a time. Low precision moves several pixels each time. 2. Position the graphic locator on any line segment of the source element, and press the ENTER key. A temporary marker is displayed at the source point. Next, the system prompts you for the destination element. As the graphic locator is positioned at the destination element, a line ( that is attached to the graphic locator) will be drawn showing the DF path. NOTES: BIFURCATED DATA FLOWS - The data flows are drawn using the standard procedure for all data flows with one exception If your new data flow is to branch out of an existing data flow, select the appropriate point on the existing data flow when prompted for source element. Continue at Step 3. If your new data flow is to merge into an existing data flow, select the appropriate point on the existing data flow when prompted for destination element. Continue at Step 4. DOUBLE-HEADED DATA FLOWS - To draw a double- headed data flow you first draw a single headed arrow using the standard add procedure. Then press F4 to add another data flow. When prompted for source element, pick the single headed arrow to which you want to add another arrowhead. When prompted for destination element, there is no need to relocate the graphic locator, just press the ENTER key. Continue as indicated in Step 6. 3. Position the graphic locator on any line segment of the destination element, and press the ENTER key. A temporary marker is displayed at the destination point. Next, the system prompts you for bend points. 4. If bend points are desired, position the graphic locator at each bend point location, and press the ENTER key. The bend points must be entered in sequence from source to destination. A maximum of 10 bend points can be input. A temporary marker is displayed at each bend point. 5. Terminate the definition of the bend points by pressing the ESCAPE (Esc) key. The system then prompts you for label text. 6. Enter the label text (1 to 40 characters), and press the ENTER key. The system then prompts you for the next line of label text. NOTE: Labels are optional and can contain up to three lines of text. 7. When no more label text lines are desired, press the ENTER key. If either the source or the destination element is a data store, the system will prompt you for the search key text. 8. Enter the search key text (1 to 40 characters), and press the ENTER key. The system then prompts you for additional search key text. NOTE: Search keys are optional and can contain up to three lines of text. 9. When no more search key text lines are desired, press the ENTER key. At this point, the temporary markers are erased, and the DF is drawn with an arrowhead at the destination point. DIAGRAM BOUNDARY (BOUND) Function Key: F5 This function allows you to define the boundary by selecting points that will be joined by the specified line style. The line styles available are: Solid - Continuous line Dash - Broken line Dot - Dotted line Mixed - Mixture of broken and dotted line Procedure: 1. Press the F5 key, and the system displays the line style menu. 2. Select the line style desired using the appropriate function key. The system then displays the line width menu. 3. Select the width desired using the function keys. The system then displays the graphic locator for you to select the points defining the boundary. A maximum of 100 points may be defined. 4. When no more definition points are required, press the ESCAPE (Esc) key. The system then prompts you for the element ID. 5. Enter the element ID (1 to 11 characters), and press the ENTER key. At this point, the temporary markers are erased and the boundary is drawn. The ID is drawn at the center point of the first line segment. BORDER (BORDR) Function Key: F6 This function allows you to draw a border around a lower level diagram. Procedure: 1. Press the F6 key, and the system displays the graphic locator for you to select the definition point for the border. 2. Position the graphic locator at the lower left corner of the border, and press the ENTER key. The system then prompts you for the upper right corner. 3. Position the graphic locator at the upper right corner, and press the ENTER key. The system then prompts you for an element label. 4. Enter the element ID (1 to 11 characters), and press the ENTER key. 5. Enter the element label (1 to 63 characters), and press the ENTER key. NOTE: Labels are optional. TEXT Function Key: F7 This function allows you to define a text string to be drawn on the diagram at a specific location. Procedure: 1. Press the F7 key, and the system prompts you for the text string you wish to input. This text string may be up to 63 characters in length. 2. Enter the desired text (63 characters maximum), and press the ENTER key. The system displays the graphic locator for you to select the text location. 3. Position the graphic locator at the point where the text is to be located, and press the ENTER key. The system then displays the graphic locator for selection of the letter height. 4. Move the graphic locator to define the letter height, and press the ENTER key. The letter height is defined as the vertical distance between the first point entered and the point just defined. The system then displays the text justification menu. NOTE: If you wish to use the default height, which is 0.5 inch, press the ENTER key without moving the graphic locator. 5. Select the justification desired by pressing the appropriate function key. The system then draws the text on the diagram at the specified location. EXCLUSIVE OR (OR) Function Key: F8 This function allows you to draw an OR symbol at a specific location. Procedure: 1. Press the F8 key, and the system displays the graphic locator for you to select the definition point for the symbol. 2. Position the graphic locator at the center point of the symbol and press the ENTER key. The system then draws the symbol. LOGICAL AND (AND) Function Key: F9 This function allows you to draw an AND symbol at a specific location. Procedure: 1. Press the F9 key, and the system displays the graphic locator for you to select the definition point for the symbol. 2. Position the graphic locator at the center point of the symbol and press the ENTER key. The system then draws the symbol. OFF-PAGE CONNECTOR (CON) Function Key: F10 This function allows you to define location of the connector, the direction of the tip point and the id. Procedure: 1. Press the F10 key, and the system displays the graphic locator for you to select the definition point for the symbol. 2. Position the graphic locator at the center point of symbol, press the ENTER key. The system prompts you for a TIP point. This determines the direction of the tip point. 3. Position the graphic locator at a point denoting the direction of the tip. Press the ENTER key. The system then prompts for label text. 4. Enter the label text (1-2 characters) and press the ENTER key. The symbol is drawn. EXIT Function Key: ESCAPE (Esc) This function allows you to exit from the Add/Edit menu. All changes made to the diagram will be saved. Procedure: 1. Press the ESCAPE (Esc) key. The system will prompt to see if you are finished editing. 2. Answer yes (Y) and press ENTER. The Options menu is displayed. ADD FUNCTION SUMMARY --------------------------------------------------------------------- Function Function Description Key Name --------------------------------------------------------------------- F1 EXTERNAL Creates External Entities ENTITY F2 PROCESS Creates Processes F3 DATA STORE Creates a Data Store F4 DATA FLOW Defines Data Flow F5 BOUNDARY Defines a Boundary F6 BORDER Draws a Border F7 TEXT Defines a Text String F8 OR Exclusive OR Symbol + F9 AND Logical AND Symbol * F10 CONNECTOR Off-page Connector Esc EXIT Exits Add/Edit Menu The Edit menu is used to change an existing diagram. Edit functions are selected using the function keys while holding down the Alternate (Alt) key. The abbreviations (Alt+F1, Alt+F2, etc.) are used to indicate this selection technique. The Edit menu functions include: MOVE CHANGE GROUP HIGHLIGHT DELETE DUPLICATE SIZE LEVEL MOVE Function Key: Alt+F1 This function allows you to move an element within a diagram. It is applicable to External Entities (EE), Processes (PR), Data Stores (DS), Text, Exclusive OR (OR), Logical AND (AND) and Off-page Connectors (CON). Procedure: 1. To move an element, press the Alt+F1 key. The system displays the graphic locator for you to select the element you want to move. 2. Position the graphic locator on one of the line segments of the element to be moved, and press the ENTER key. If text is being moved, place the locator anywhere in the text string, and press the ENTER key. The system then displays the graphic locator for you to choose the new location of the element. 3. Position the graphic locator at the new location of the element, and press the ENTER key. The element is then redrawn at the new location, starting at the definition point of the element, with all connecting data flows being redrawn to this new location. DELETE Function Key: Alt+F2 This function allows you to delete elements from a diagram. Procedure: 1. To use the Delete Function, press the Alt+F2 key. The system displays the graphic locator for you to select the element you want to delete. 2. Position the graphic locator on one of the line segments of the element to be deleted, and press the ENTER key. If text is being deleted, place the locator anywhere in the text string, and press the ENTER key. The system will erase the element and any data flows connected to it. These elements are permanently deleted from the diagram. CHANGE Function Key: Alt+F3 The change function uses seven different change menus. These change menus are used to change existing elements within a diagram. The system identifies the type of element to be changed and displays the proper Change menu. The Change menus are Change TEXT Menu Change DS Menu Change BOU Menu Change PR Menu Change BOR Menu Change EE Menu Change DF Menu The connector symbol is changed directly from the EDIT menu (no new menu is displayed). Procedure: 1. To use the Change function, press the Alt+F3 key. The system displays the graphic locator for you to select the element you want to change. 2. Position the graphic locator on one of the line segments of the element to be changed, and press the ENTER key. If text is being changed, place the locator anywhere in the text string, and press the ENTER key. The system identifies the element to be changed and display the appropriate Change menu. Note: If the element to be changed is off-page connector, the system will prompt for the new label. Enter the label (1 to 2 characters) and press ENTER key. 3. Enter the change, and press the ENTER key. At this point, the change is made and the menu is returned to you for further changes. 4. When all changes have been made, press the ESCAPE (Esc) key and the system will return you to the Change Function menu so that you can select additional elements to change. 5. After all changes have been made, press the ESCAPE (Esc) key and you will return to the ADD/EDIT menu. Change Text Menu - This menu is displayed when a text string is selected for change. This menu allows you to redraw text with a new text string or to change the size of the text string. NEW TEXT STRING: 1. To change the text string, press the F1 key. The system prompts you for the new text string. 2. Enter the new text string, and press the ENTER key. The new text string is drawn at the location of the old text string. NEW TEXT SIZE: 1. To change the size of the text string, press the F2 key. The system displays the graphic locator for you to select the new text size. 2. Position the graphic locator at a point above the current text element base and press the ENTER key. The new height is defined as the vertical distance between the current text base and the point just defined. The system then redraws the text in the new size. Note: If you wish to use the default height, which is 0.5 inch, position the graphic locator at the current text base, and press the ENTER key. When all changes have been made, press the ESCAPE (Esc) key to exit. Change Boundary (BOU) Menu - This menu is displayed when a boundary is selected for change. This menu allows you to redefine the ID, the path, the width, or the style. NEW ID: 1. To change the boundary ID, press the F1 key. The system prompts you for a new boundary ID. 2. Enter the new ID (1 to 11 characters), and press the ENTER key. The new ID text is then drawn on the boundary. NEW PATH: 1. To change the path of the boundary, press the F2 key. The system displays the graphic locator for you to select the points in the new boundary definition. 2. Position the graphic locator at successive points defining the boundary, and press the ENTER key. A temporary marker is displayed at each point. 3. When no more points are to be selected, press the ESCAPE (Esc) key. The system then redraws the boundary as altered. NEW LINE WIDTH: 1. To change the line width of the boundary, press the F3 key. The system displays the line width menu for you to select the line width (Normal, Bold, or Heavy) 2. Select the desired line width using the Alternate-Function (Alt+Fks) keys. The system then redraws the boundary with the new line width. NEW LINE STYLE: 1. To change the line style of the boundary, press the F4 key. The system displays the line style menu for you to select the line style (solid, dash, dot, or mixed). 2. Select the desired line style using the Alternate-Function keys (Alt+Fks). The system then redraws the boundary with the new line style. When all changes have been made, press the ESCAPE (Esc) key to exit. Change Border (BOR) Menu - This menu is displayed when a border element is selected for change. This menu allows you to change the label and the size. NEW LABEL 1. To change the border label, press the F1 key. The system prompts you for a new border label. 2. Enter the new label (1 to 63 characters) and press the ENTER key. The new border label is then drawn on the border. NEW SIZE: 1. To change the size of the border, press the F2 key. The system displays the graphic locator for you to select the first point in the new border. 2. Position the graphic locator at the lower-left corner of the new border, and press the ENTER key. A temporary marker is displayed there, and the graphic locator is returned for the selection of the next border point. 3. Position the graphic locator at the upper-right corner and press the ENTER key. The system then redraws the border at the new size. When all changes have been made, press the ESCAPE (Esc) key to exit. Change Data Flow (DF) Menu - This menu is displayed when a data flow is selected for change. This menu allows you to redefine the path, the label, the keys, or the label location. This menu is also used to add or delete a a cross at the intersect of the data flow and border. NEW PATH: 1. To change the data flow path, press the F1 key. The system deletes the current data flow and displays the graphic locator for you to select the new source element. 2. Position the graphic locator on a line segment of the source element, and press the ENTER key. A temporary marker is displayed at the source element, and the graphic locator is returned for you to select the destination element. 3. Position the graphic locator on a line segment of the destination element, and press the ENTER key. A temporary marker is displayed at the destination point, and the graphic locator is returned for the selection of the bend points. 4. Position the graphic locator at the location of each bend point, and press the ENTER key. The bend points must be entered in sequence from the source to the destination point. A maximum of 10 bend points may be input. A temporary marker is displayed for each bend point. 5. After the last bend point has been selected, press the ESCAPE (Esc) key. The system erases the temporary markers, draws the data flow lines, and draws an arrowhead at the destination point. Also, it redraws the data flow label and search keys. NEW LABEL: 1. To change the data flow label, press the F2 key. The system prompts you for a new label. 2. Enter the new label (1 to 40 characters) and press the ENTER key. The system then prompts you for the next line of text. Note: Labels can contain up to three lines of text. 3. Enter the additional text lines as necessary, and press the ENTER key. 4. When no more text lines are desired, press the ENTER key. The system then redraws the new label text. NEW SEARCH KEYS: 1. To redraw the data flow search keys, press the F3 key. The system prompts you for the new search key text. 2. Enter the new search key text (1 to 40 characters) and press the ENTER key. The system then prompts you for the next line of key text. Note: Search keys can contain up to three lines of text. 3. Enter the additional text lines as necessary, and press the ENTER key. 4. When no more text lines are required, press the ENTER key. The system then draws the new search keys. SLIDE LOCATION: 1. To change the location of the search keys and label, press the F4 key. The system displays the graphic locator for you to select the new definition point for data flow text. 2. Position the graphic locator on a data flow line segment and press the ENTER key. This point defines the new starting point for the data flow text. The system then redraws the label and key text at the new location. ADD X: 1. To add a cross at the intersection of a data flow and border, press the F5 key. If the data flow intersects only one border, crosses (x) are added to all intersection points of the DF and border. If the data flow intersects more than one border, the graphic locator is displayed for you to select the appropriate border. 2. Position the graphic locator on the appropriate border and press the ENTER key. The system then draws a cross at all intersections of the data flow and the selected border. DELETE X: 1. To delete a cross on the selected data flow, press the F6 key. If the data flow has crosses on more than one border, the graphic locator is displayed for selection of the appropriate border. 2. Position the graphic locator on the border, press the ENTER key. When all changes have been made, press the ESCAPE (Esc) key to exit. Change Data Store (DS Menu - This menu is displayed when a data store is selected for change. The elements you can change are the ID and the label. NEW ID: 1. To change the data store ID, press the F1 key. The system prompts you for the new data store ID. 2. Enter the element ID (1 to 11 characters) and press the ENTER key. The system then draws the new ID. NEW LABEL: 1. To change the data store label, press the F2 key. The system prompts you for a new data store label. 2. Enter the new label (1 to 40 characters) and press the ENTER key. The system draws the new data store label changing the length of the data store to accommodate the new text. When all changes have been made, press the ESCAPE (Esc) key to exit. Change Process (PR) Menu - This menu is displayed when a process is selected for change. This menu allows you to redefine the ID, the Label, and the implemented-by text. NEW ID: 1. To change the process ID, press the F1 key. The system prompts you for the new ID. 2. Enter the new ID (1 to 11 characters), and press the ENTER key. The system draws the new ID. NEW LABEL: 1. To change the process label, press the F2 key. The system prompts you for the new process label. 2. Enter the new label (1 to 11 characters), and press the ENTER key. The system then prompts you for the next line of text. Note: Labels can contain up to six lines of text. 3. Enter the additional text lines as necessary, and press the ENTER key. 4. When no more text lines are required, press the ENTER key. The system then draws the new label. NEW IMPLEMENTED-BY TEXT: 1. To change the implemented-by text, press the F3 key. The system prompts you for the new implemented-by text. 2. Enter the new implemented-by text (1 to 11 characters), and press the ENTER key. The system then draws the new implemented-by text in the PR. When all changes have been made, press the ESCAPE (Esc) key to exit. Change External Entity (EE) Menu - This menu is displayed when an external entity is selected for change. This menu allows you to redefine the ID and the label. NEW ID: 1. To change the external entity ID, press the F1 key. The system prompts you for the new ID. 2. Enter the new ID (1 to 11 characters) and press the ENTER key. The system then draws the new ID. NEW LABEL: 1. To change the external entity label, press the F2 key. The system prompts you for a new label. 2. Enter the new label (1 to 11 characters) and press the ENTER key. The system then prompts you for the next text line. Note: Labels can contain up to six lines of text. 3. Enter the additional text lines as necessary, and press the ENTER key. 4. When no more text lines are required, press the ENTER key. The system then draws the new label. When all changes have been made, press the ESCAPE (Esc) key to exit. DUPLICATE Function Key: Alt+F4 This function allows you to duplicate an element within a diagram. It is applicable to external entities, data stores, and Off-page connectors. Procedure: 1. To use the Duplicate function, press the Alt+F4 key. The system displays the graphic locator for you to select the element to be duplicated. 2. Position the graphic locator on a line segment of the element to be duplicated, and press the ENTER key. The system returns to the graphic locator for you to choose the location where the duplicated element is to appear. 3. Position the graphic locator where the duplicated element is to appear, and press the ENTER key. The system then displays the diagram with the duplicated element in the specified location. Duplicate symbols (hatch line for EE's and triangle for DS's) will automatically appear when the element is repeated, based on ID. GROUP EDIT Function Key: Alt+F5 This function allows you to move, delete, or change the visibility of a group of elements within a boundary. A group consists of all the elements having points entirely within a group boundary. The system requests that you select the boundary when you press either the F1, F2, or F2 keys. In addition, any data flow elements connected to the group elements will be affected; that is, they will be redrawn to connect a moved element, deleted if their connected element is deleted, or will remain in view if connected to a "viewed" element. The Group edit options are: F1 - Move Move all elements of the group. F2 - Delete Delete all elements of the group. F3 - View View only the elements of the group. F4 - Restore Restore all elements to view after a previous view group function. Procedure: 1. To use the Group Edit function, press the Alt+F5 key. The system will display the Group Edit menu. 2. After all changes have been made, press the ESCAPE (Esc) key to exit. SIZE Function Key: Alt+F6 This function enables you to change the size of a diagram Procedure: 1. To use the Size function, press the Alt+F6 key. The system displays the current size of the diagram and prompts you for the new size. 2. Enter the new width and height, in inches, separated by a comma, and press the ENTER key. The system displays the graphic locator for you to select a reference point. The first two reference points are used to establish a distance and direction for the diagram elements to be shifted, when drawn in the new size area. If no shift is desired, enter the same point twice. 3. To terminate the use of the Size function, press the ESCAPE (Esc) key. HIGHLIGHT Function Key: Alt+F7 This function enable you to highlight or dehighlight an element within a diagram. Highlighted elements will be redraws with a bold yellow line. Procedure: 1. To use the Highlight function, press the Alt+F7 key. The system displays the highlight menu. F1 - ON - Set selected elements to highlight state. F2 - OFF - Set selected elements to non-highlighting state. Note: Highlighting is temporary, remaining in effect only during the current use of the diagram. In response to either of the options, the system requests that you choose the elements to be affected. After each element is chosen, it is immediately redrawn in the selected state. If the element chosen to be highlighted or dehighlighted has a duplicate somewhere else in the diagram, it will also be affected. The ESCAPE (ESC) key terminates the selection process. 2. To terminate the use of the Highlight function, press the ESCAPE (Esc) key. LEVEL Function Key: Alt+F8 This function enables you to explode down to a lower level diagram from a current diagram. Procedure: 1. To use the Level function, press the Alt+F8 key. The system displays the Level menu. F1 - Down - The system requests the lower level diagram name. Note: If you cannot remember the lower level diagram name, type "?". The system will display your current directory list for you to determine the diagram name. After determining the lower level diagram name, press the ENTER key to return to the current diagram where you can state the lower level diagram name. F2 - Up - The system returns you to the higher level diagram where you started. 2. To terminate use of the Level function, press the ESCAPE (Esc) key. PLOT Function Key: Alt+F9 This function allows you to create the plot of a diagram on an on-line plotter. Refer to the following section, "Plotting/Printing", for color definitions available on the plotter. Procedure: 1. To initiate a plot, press the Alt+F9 key. The system will request that you enter the number of the asynchronous communications adapter port (1 or 2) where the plotter is attached. 2. Enter the number, and press the ENTER key. Note: If the ENTER key is pressed without entering a number, the system assumes port number 1 or the most recently used port. 3. Next, the system asks whether you wish to select a window. If you want a window, the system displays the graphic locator for you to select the lower-left and upper-right corners of the area of the diagram you wish to plot. If you decline to select a window, the entire diagram will be plotted. 4. The system then prompts you to make any adjustments to the plotter (changing the paper, setting any local windows, etc.) 5. When you are ready to plot the diagram, press the ENTER key and the system will create the plot. EDIT FUNCTION SUMMARY ----------------------------------------------------------------------- FUNCTION FUNCTION DESCRIPTION KEY NAME ----------------------------------------------------------------------- Alt+F1 MOVE Moves diagram elements Alt+F2 DELETE Deletes diagram elements Alt+F3 CHANGE Changes diagram elements Alt+F4 DUPLICATE Duplicates diagram elements Alt+F5 GROUP EDIT Edits a group of elements within a boundary Alt+F6 SIZE Changes the size of a diagram Alt+F7 HIGHLIGHT Highlights or dehighlights a diagram element Alt+F8 LEVEL Explodes to a lower level diagram. Alt+F9 PLOT Plots a diagram on an attached plotter PLOTTING/PRINTING PLOTTING DFDdraw supports multiple plotters; refer to the chapter 'System Requirements'. Refer to PLOT in previous section for additional information on plotting a diagram. The baud rate on the plotters should be set to 9600. For information on how to set the dip switches, refer to the respective plotter manual. Note: See Setting Configuration. COLOR DEFINITIONS DFDdraw uses seven logical colors. The default pens used for the various element types are shown in the following table: ----------------------------------------------------------------------- ELEMENT 2-PEN PLOTTER 6-PEN PLOTTER 8-PEN PLOTTER TYPE PEN NO. PEN NO. PEN NO. ----------------------------------------------------------------------- EE 2 6 6 PR 1 1 7 DS 1 1 7 DF 1 1 7 BOU 2 2 2 BOR 1 1 7 TEXT 1 3 3 PR 2 4 4 AND 2 4 4 CON 1 1 7 Note: If an element is highlighted, it will use Pen 1 on the 2-Pen Plotter, Pen 5 on the 6-pen plotter, and Pen 5 on the 8-pen plotter. PRINTING The print function generates a hardcopy of the current screen display via an attached printer. The ZOOM and PAN functions can be used to isolate sections of a diagram for hardcopy display. There are two print resolutions available for most of the printers supported by DFDdraw. To print, press either: CTRL+F5 Standard resolution available for all printers. CTRL+F6 High resolution available for all printers except the Toshiba series. Note: HP LaserJet Series II and III require a total of 2 Meg of printer memory for high resolution printing. NOTE: Printer must be attached to a parallel port. USING A MOUSE The mouse pointing device will function with both menu selection and graphic editing. The mouse buttons can be used in place of keyboard keys as defined below. ----------------------------------------------------------------------------- KEYBOARD 3-BUTTON 2-BUTTON KEY MOUSE MOUSE ----------------------------------------------------------------------------- ESC Click left button Click left button ENTER Click right button Click right button + Hold left button and Hold left button and click click right button right button - Hold right button and Hold right button and click click left button left button INS Click middle button Hold either button and click the other ARROW KEYS Movement of mouse Movement of mouse MENU SELECTION Move highlight box to appropriate menu selection, click ENTER button. ZOOM FUNCTION The plus (+) and (-) keys are used with the zoom function to increase or decrease the size of the zoom box, respectively. The mouse can be used to replace the usage of these two buttons as defined the above table. GRAPHIC EDITING The mouse will function with the graphic editor for element location, and usage of the ENTER, ESC and INS keys. For element location, use the mouse to move cursor to appropriate position for element location. Use the buttons as noted in the above table to represent the ENTER and ESC keys as defined for each appropriate element selection process. Use of the mouse to represent the INS key will be active except when in the zoom mode. The INS key is used to toggle movement of the graphic locator between high and low precision. GENERAL NOTES The mouse is an optional feature with DFDdraw. All input can be entered through the keyboard if a mouse is not available. All menus and editing features are defined in this manual remain the same. If a mouse is used, note above listed table to identify appropriate usage. ERROR MESSAGES ADJUST PAPER. ENTER TO CONTINUE - Adjust paper on printer to top of form. Hit ENTER to print or CTRL-BREAK to abort print function. BORDER AND DF DO NOT INTERSECT - Element chosen at 'Pick Border:' prompt was not border element. CANNOT DELETE FILE - Error in file or disk structure. Try to delete again or try to delete from DOS. CANNOT OPEN FILE - File is in wrong format. It is not a DFDdraw diagram file. CANNOT PAN AT FULL SCALE - Currently at full scale on diagram. Must use zoom function before PAN can be used. CANNOT RENAME FILE - Possible error in file or disk structure. Try to rename again or try DOS RENAME. COINCIDENT POINT - Same point was picked for DF Source and Destination. Move locator to new position before picking second point. COMMAND ABORTED - Break condition aborted command that was in progress. Retry the same command again. DEVICE ERROR ON ASYNC PORT - Error while plotting. Check the following conditions: 1) Be sure correct communications port number is entered when prompted for; 2) Be sure plotter is turned on and in a ready state (paper loaded, etc.); 3) Switch settings on plotter must be correct-see plotter manual; 4) You must use the correct cable as specified by plotter manufacturer. DF CROSSES ALREADY AT MAXIMUM - Add X function was chosen and DF already crosses 50 elements. To use Add X function, one of the crosses must be deleted. DIAGRAM ALREADY EXISTS - Diagram exists. Retry with a new name. DIAGRAM NOT FOUND - Diagram name entered was not found on the disk and directory currently in use. Use DIRECTORY function to check spelling of diagram name and/or use DRIVE and CHANGE DIRECTORY functions to change to correct directory. DIRECTORY NOT FOUND - The directory specified in the CHANGE DIRECTORY function does not exist. Display directory of disk and check spelling. DISK SPACE OR R/W ERROR - Disk is full or error encountered while reading/writing a disk. ERROR, PLEASE RETRY - Break or error condition encountered during processing of last command. Retry the same command. FILE ALREADY EXISTS - File already exists for the diagram name entered. Retry with new name. ILLEGAL DRIVE - Specified disk drive does not exist. Check existing drive and try again. Input the letter only (e.g. A). ILLEGAL ELEMENT TYPE - Function specified is not valid for element type chosen. MOVE function is not valid for Data Flow, Boundary or Border. To "move" these elements, use the CHANGE function and change the path. Valid elements for Source and Destination of Data Flows are External Entity (EE), Process (PR), Data Store (DS), Data Flow (DF), and Off-Page Connectors (CON). A DF cannot have DF as Destination If Source is also a DF. ILLEGAL NAME - Null line entered for Diagram Name or name does not conform to DOS standards. INVALID HEIGHT - Point chosen for height is at or below level of point chosen for text position. The point chosen for position for the text repre- sents the bottom of the text. The point chosen for HEIGHT: must be above the first point. The vertical distance of these two points is the text height. INVALID LINE SEGMENT FOR BIFURCATION - Maximum allowable bend points for DF is 10 and one of the following conditions has occurred: 1) DF was chosen as source of bifurcation and number of bend points from source of DF to source point chosen for bifurcation is 10; or 2) DF was chosen as destination of bifurcation and number of bend points from that point to destination of existing DF is 10. Both of these conditions would cause maximum points to be exceeded as another bend point is added at the bifurcation point. INVALID NUMERIC INPUT - Value(s) entered are less than 0 or entry is invalid. Size must be entered as #, # (e.g. 14,9). INVALID OPTION - Option entered is not valid choice. Check list of valid options for correct spelling. INVALID POINT - Point picked is outside the diagram boundary. MAXIMUM NUMBER OF ELEMENTS EXCEEDED - Maximum number of elements is 300 and has been exceeded. No more elements may be added until others have been deleted. NO BORDERS CROSSED - Add X function chosen and data flow being changed does not intersect any border elements. NO ELEMENT DETECTED - One of the following conditions has occurred: 1) During the pick element function, the locator was not placed on an element. (The tip of the locator must be on the element you wish to choose) or 2) Point chosen for SLIDE function is not on DF that was chosen for CHANGE function. The position chosen to Slide Text to must be on the Data Flow. NO GRAPHICS TO PRINT. ENTER TO CONTINUE - Current view is empty. Hit ENTER to continue with DFDdraw menu. If in zoom mode, use CTRL+F3 to return to full diagram. PLOTTER SUPPORT MODULE ABSENT - Plotter module must be included in DFDDRAW.BAT file to be able to output diagrams to a plotter. See 'READ.ME' file, and 'SETTING CONFIGURATION'. POINT NOT ON DF - Point chose for position for SLIDE function (DF) must be on the DF that was chosen in the CHANGE function. PRINTER ERROR. ENTER=RETRY, CTRL+BREAK=STOP - Error encountered while printing. Check power and ON-LINE status of printer. Hit ENTER key to retry print or CTRL+BREAK to return to menu selection. REFILLING PRINT BUFFER - Printer is pausing while buffer is being refilled. Wait for next prompt. SOURCE AND DESTINATION ARE THE SAME - Beginning and end points for data flow are both on the same element. Try again with different source or destination. UNABLE TO LOAD DFDDRAW - Random Access Memory (RAM) was exceeded. DFDdraw needs a minimum of 320K of RAM to execute. If your AUTOEXEC.BAT file loads some other program into memory prior to loading DFDdraw, that program may take up some of the RAM and not leave enough for DFDdraw. Reboot the PC without loading the other program and try to load DFDdraw again. UNSUPPORTED MONITOR DEVICE - Monitor device specified in DFDDRAW.BAT file does not exist on the default drive. If on hard disk, the monitor module must be in root directory or PATH command needs to be updated to correct directory. Also check that module is spelled correctly. See 'READ.ME' file, and 'SETTING CONFIGURATION'. UNSUPPORTED PLOTTER DEVICE - Plotter module specified in DFDDRAW.BAT file was not found on the default disk drive. If on hard disk, plotter module must be in root directory or PATH command needs to be updated to correct directory. Also check spelling of module name. See 'READ.ME' file, and 'SETTING CONFIGURATION'. UNSUPPORTED PRINTER DEVICE - Printer module specified in DFDDRAW.BAT file was not found on the default disk drive. If on hard disk, printer module must be in root directory or PATH command needs to be updated to correct directory. Also check spelling of module name. See 'READ.ME' file, and 'SETTING CONFIGURATION'. VIEW ALREADY AT MAXIMUM - Maximum number of levels (6) has been reached. X ALREADY EXISTS - Add X function was chosen and X already exists for that border and data flow intersection. X NOT ON BORDER - Delete X function chosen and does not exist on border chosen. ----------------end-of-author's-documentation--------------- Software Library Information: This disk copy provided as a service of Public (software) Library We are not the authors of this program, nor are we associated with the author in any way other than as a distributor of the program in accordance with the author's terms of distribution. Please direct shareware payments and specific questions about this program to the author of the program, whose name appears elsewhere in this documentation. 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