Software of the Month Club 1996 August

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PC-Draft-CAD version 3.07 Full featured Computer Aided Drafting Copyright 1995 Natural Software 19 South Fifth Street St. Charles, IL 60174 (708) 377-7320 Compuserve ID: 70047,744 PC-Draft-CAD release 3.07 is distributed in a ZIP file with an INSTALL.BAT that installs it by running the self-extracting LHARC file PCDCAD.EXE, and setting up a START.BAT that runs the proper display driver for your system. It also sets up the proper subdirectory structure and places the files. The list below shows all the file names. If you find missing files please contact us at the above address/phone. To install PC-Draft-CAD: - if you received this shareware version on diskette, there should be one large EXE file: PCDCAD.EXE To install on your hard disk (C:) 1 - Place this disk in drive A: 2 - Enter: [C:] to make it your current drive. 3 - Enter: [A:INSTALL <SOURCE LOCATION>]. For example, enter: A:INSTALL A: - if you received this from an on-line service or BBS you obviously have already extracted the files from the .ZIP file (or you wouldn't be reading this!). To select the correct display driver and to set up your sub-directories, change to your root directory and run: INSTALL [sourcedir] for example, if the files are in C:\TEMP, run: TEMP\INSTALL C:\TEMP. How to install under Windows: ----------------------------- To setup PC-Draft-CAD to run under Windows (after installing in DOS): In program manager: 1. Open the group icon where you want to put the PC-Draft-CAD icon. 2. Click on the File menu and choose New. The "New Program Object" dialog box displays. 3. "Program Item" is already selected, so simply click on the OK button. 4. The "Program Item Properties" dialog box appears. Enter the following data: Description: PC-Draft Command Line: C:\PCDCAD\DRAFT3.PIF Working Directory: C:\PCDCAD Shortcut Key: None 5. Click on the Change Icon button. A warning box says: "There are no Icons available....". Click the OK button. 6. In the "Change Icon" dialog box, enter a new File Name: C:\PCDCAD\DRAFT3.ICO 7. Click on the OK button. It displays the Draft3 icon. Click on the OK button again to exit back to the "Program Item Properties" dialog. 8. Click on the OK button to exit. The Draft3 Icon should appear among the others in your active group. 9 Double click on the Draft3 icon to start the CAD program. Contents of the self-extracting file: read.me - you're reading it bbsinst.bat - run this if you got this from a BBS order.frm - fill this in to register products.lst- info on more Natural Software draft3.exe - the main PC-Draft-CAD program draft3.cfg - configuration file draft3.hlp - help file DRAFT3.PIF - MS Windows Program Information File DRAFT3.ICO - Windows icon cgadrv.com - driver for CGA (delete if not used) vgadrv.com - driver for VGA/EGA (del if not used) svgadrv.com - driver for Super VGA (del if not used) hgcdrv.exe - driver for Hercules (del if not used) vgastart.bat- starts PC-Draft-CAD on VGA/EGA cgastart.bat- starts PC-Draft-CAD on CGA hgcstart.bat- starts PC-Draft-CAD on Hercules vidtest.com - tests video - used by install.bat dot--drv.exe- driver for dot-matrix printers hpgl-drv.exe- driver for HPGL plotters hplj-drv.exe- driver for LaserJet/DeskJet printers wpg--drv.exe- "print" drawing in WordPerfect format epson060.cfg- configuration files for Epson epson072.cfg compatible printers: each for a epson090.cfg different horiz. resolution. epson120.cfg (copy one of these to: PRINTER.CFG) epson240.cfg for use by DOT--DRV.EXE ibmdm060.cfg- configuration files for IBM dot matrix ibmdm120.cfg compatible printers. ibmdm240.cfg dot24180.cfg- configuration files 24 pin dot matrix dot24240.cfg (Epson LQ-2500 command set) hpgl-a.cfg - config files for HPGL plotters hpgl-b.cfg the letter indicates the paper size hpgl-d.cfg hpsf-a.cfg - same for small format (A & B size) hpsf-b.cfg plotters. draft3.doc - Manual. enter: COPY DRAFT3.DOC PRN dline.dwg - Sample drawing: Double line command fndation.dwg- Sample drawing: Patterns house.dwg - Sample drawing: Layers pattern1.lib- Object Library: Patterns archplan.lib- Object Library: Architectural duplex.fon - Font: double line sans.fon - Font: sans serif script.fon - Font: fancy script simplex.fon - Font: single line triplex.fon - Font: triple line arcs.mac - Sample macro file arctutor.mac- Example of Extended Macro Language ------- Files not included (for registered users only) ------- EXTRA utilities - not distributed as shareware DXF2PCD.EXE - Converts Autocad DXF files to Draft3 drawings WPGCONV.EXE - Converts WordPerfect Graphic files into Draft3 Drawings GEM--DRV.EXE - to dump as GEM Draw file PRTDATA.EXE - Prints Drawing database reports on printer. OBJCOST.EXE - Report counts objects in the drawing and totals cost data WINDOWS.LIB - Library of window elevations DOORS.LIB - Library of door elevations PATTERNS.DWG - Source for Pattern1.lib for user modification TUTOR?.MAC - macros for 7 Lessons in the tutorial manual Known Problems: Expanded Memory Managers: PC-Draft-CAD's own virtual memory management code automatically uses your expanded or extended memory. It may not be compatible with other memory management software. For example, Quarterdeck's QEMM. If you have a problem running PC-Draft-CAD, try disabling your other memory managers and TSR (Terminate Stay Resident) programs. Alternatively you may disable PC-Draft-CAD's memory manager by adding the following environment variable via DOS's SET command: SET PCDVM = /NOEMM/NOEXT PC-Draft-CAD will still be able to create and edit large drawings by paging to a hard disk swap file. Zenith EGA display incompatibility: For PC-Draft-CAD to work properly with the Zenith EGA display adapter (model Z-449), dip-switch number five (5) must be set to "OFF". this is called "Auto-Emulation Mode" in their manual. If switch 5 is "ON", the display drivers (VGADRV.COM and CGADRV.COM) will hang the system when run. Dip-switch 5 on the Zenity EGA board is the second switch from the top. Moving the switch to the left is "OFF". Latest Updates: Set Extents You can now more easily change the "Drawing Extents". The drawing extents are coordinates used by the Zoom All command to set the new viewport -- they are normally set to the farthest point you have drawn on the overall drawing area. Press [Alt+D] to change the extents. You then draw a box to indicate the minimum and maximum coordinates. Area Calculation Press [Alt+X] to turn on area calculation. A blank box appears below the control panel. Move the cursor to one corner of the area, press [Enter], move to the opposite corner, press [Enter]. The area is shown in the box below the control panel. Repeat this process. Each sub-total is added to the total. Press [Esc] to end area calculation. Search for Ob[J]ect This works like the search for element command. When you want to make a new object the "current" object, move the cursor near the object you want and press [Alt+J]. The object whose origin is closest to the cursor (on the current layer) will become the "current" object. Orthographic drawing When you want to draw lines that are exactly horizontal or exactly vertical you can now press the [Shift] key while moving the mouse. When either [Shift] key is pressed the mouse cursor snaps back to the closest right angle to the starting point. You can also simply use the arrow cursor keys on the keyboard to move straight vertically or horizontally. Note that the [Shift] key should not be pressed when using the arrow keys because this cause the keys on the numeric keypad to represent numbers instead of cursor movements. Using the [Shift] key for orthographic movement is for use with the mouse only. Improved Double line command: Pg. 31 in the manual talks about using the XLine (double line) command from left to right verses right to left. This has been changed to make it easier and more intuitive. Now the line ends work the same way regardless of which end point is drawn first. US Decimal Units You new have a choice of decimal FEET or INCHES (on the Options/Units menu), the offset indicator on the control panel shows decimal INCHES or decimal FEET as per your choice. Decimal inches is easier for electrical engineering drawings such as circuit boards that are drawn full size. The dimensions are now correctly shown according to your selection. Hercules display type: If you have a Hercules display, the install process will detect it and create the proper start.bat file for your use. The Hercules driver is different than the other display drivers in that it executes DRAFT3.EXE directly and is not a TSR (Terminate and Stay Resident) program. So, running: HGCDRV directly works just as good as running START. Menu Choices: If you have a mouse, moving the cursor to the top menu bar changes the mouse cursor to a pointing hand for menu selections. If you do not have a mouse, the cursor disappears when you move into the menu bar, but you can still make menu choices in this way. However, it does not make sense to choose drawing commands in this manner, because the begining cursor position which selects the starting point of a drawing element such as a line will be in the wrong place (at the top of the screen). For drawing commands use the mouse left button or the F2 function key instead (after positioning the cursor at the proper starting location). New [Q]uick move command: You can now precisely position the cursor in relationship to your base point by using the [Q]uick move command. When you press the [Q] key a dialog window opens allowing you to enter the distance in feet and inches for both the Y offset and the X offset from your base point. After entering a value, first for the X offset, press ESC to continue and enter a value for the Y offset, then press ESC to exit the window. At that point (if the new location is within the current view) the cursor will be moved to the specified offset. For example to draw a line that is precisely 10 feet, 6 inches and 3/16 inch long: 1. move the cursor to where you want the line to start. 2. press [Alt+B] to set your base point to zero at the current cursor location. 3. press [L] to start the line command. 4. press [Q] to open the [Q]uick move window. 5. enter "10" for feet, press [Enter], enter "6" for inches, press [Enter], enter "3" for the 16th. field. 6. press [ESC] to exit the X offset window. and [ESC] again to exit the Y offset window (so the line is horizontal -- Y offset = 0). 7. press [Enter] to end the line command. In the case where the specified end point falls outside the current view, the current drawing command will be completed (you dont have to press [Enter]). This command lets you draw elements with precise endpoints even though those points would fall between screen pixels. Otherwise you would have to Zoom in closer to position the cursor to the exact dimension. [N]ew Layer/Object Press [Alt+N] to start a new layer and name the first new object on that layer. You used to have to do this by opening the database window. s[E]t Scale This new option on the Options menu lets you set the drawing scale. You used to have to open the databse window to set the drawing scale. And, since the database window would not open unless you have at least one element, this was inconvenent. Now you can set the scale before drawing anything. New [Z]ip to base command: This new command moves the cursor to the base position: [Alt+Z] (for: "[Z]ip to base") moves the cursor to the base position. The base position is set by [Alt+B]. New Group command: A new command: [G]roup, has been added to the Objects menu. This new function lets you create a new object from existing elements displayed on the screen. To use the [G]roup command, follow these steps: 1 - position the cursor to the upper left corner of the area containing elements you want to add to the new object. 2 - press [F3][G] to select the [G]roup command from the objects menu. 3 - move the cursor to surround the elements with a rubber band box. 4 - press [Enter] once the box surrounds the elements you want. 5 - enter the name for the new object in the pop up window. 6 - the new object will be redrawn in place -- use the Object Move command to display it in a new location. This is very useful when creating new object libraries from existing drawings. A hint: make a new layer in the existing drawing and add the new object that will go into the new object library on the new layer. Then when you are ready, (and have made backup copies of the original and new drawing), delete all the other layers, leaving only the new, object library layer. Then save the objects to your new object library file with the command: [F4][O][S]. New Printer Options: Set Configuration file: This lets you specify which printer configuration file to use by the printer driver. Only the DOT--DRV.EXE and HPGL-DRV.EXE drivers use configuration files. In previous versions, the DOT--DRV.EXE driver looked for the specific filename: PRINTER.CFG. Now you can use different configurations (for different resolutions or different page sizes) without changing the filename. The filename dialog box works just like the other filename selection dialogs. You can enter a wild card string like: "*.CFG" and press Enter to list all the files with the CFG extension. Set Page Size: This option lets you set the paper size you will be printing on. The paper size affects the new Preview command described below. New Preview command: A new menu choice on the Print Options menu (press [F8], then [O] for Options) lets you judge how much of your drawing will be printed at a given scale and a given page size. When you press [P] for Preview, a box will temporarily be drawn on the current view to indicate the area of your drawing that will be printed. This area is determined by the current drawing scale and current print scale. It is further based on an 8 inch by 10 inch paper size. If your current view width or height is too small you will not see the extents of the preview box. This indicates that you should zoom "out" to a larger view before printing (unless you intend for the drawing to be truncated when printed). Press any key to remove the preview box and return to the print menu. 24 pin dot matrix printers: The dot matrix printer driver (DOT--DRV.EXE) has been updated. It now supports 24 pin modes for most 24 pin printers. To use 24 pin mode you must select one the two supplied configuration files: DOT24180.CFG (which uses 180 dots per inch resolution) or DOT24240 (240 dots / inch resolution). Note: you select printer configuration files via the Printer/Options/Config file menu. These files use the Epson LQ-2500 bit image mode selection commands -- the "Esc * 40 shown in the 140 dpi file below: --------------------------------------------------- 8 - page width -- For 24 pin mode 40: 360 dpi 10.5 - page height 360 - horiz dots per inch 180 - vert dots per inch 24 - # of raster passes 24 - # of scan lines per printer pass (print head wires) 2880 - # of bytes = 0b40 hex; bytes = 11, 64 dec... 27 51 24 255 - line feed string (ESC "3" 24) = 24/180 inch 13 10 27 42 40 64 11 255 - graphics line setup string (cr lf Esc * 40 64 11) ---------------------------------------------------- Many other brands of printers use the same command set. If your 24 pin printer uses another command set, you may be able to modify the .CFG file to work with it. The parameter in the .CFG file for # of raster passes is no longer used. The printer driver calculates this. However the field is left in for backward compatibility. HPGL CFG File: Another major change to the HPGL-DRV.EXE driver: It now uses a configuration file. The filename can be set from the printer Options menu, or if it is left blank, it will look for the file: HPGL.CFG. This CFG file is an ASCII text file with five lines. Each line has a value. The first four values specify the paper size in plotter units. For example, the file: HPGL-AD.CFG contains: -17208 Min. X for Architectural D size paper (24 x 36) 17208 Max. X vertical load (Landscape) -11592 Min. Y 11592 Max. Y 0.3 Pen-tip width in millimetres - can range from 0.1 - 5.0mm This is for Architectural D size paper and has the minimum and maximum X and Y values appropriate for a HP DXL plotter. All text to the right of the value is optional commentary. Note that these sizes are for "vertically" mounted paper, ie: the short side of the paper is inserted into the plotter. The fifth value sets the pen width. We have supplied several HPGL CFG files for various paper sizes. The file names indicate what paper size they specify. For example: -- These are for HP DraftPro large format plotters: HPGL-A.CFG is for A size (8.5 x 11 inch) paper HPGL-AB.CFG is for Architectural B size (11 x 17 inch) paper HPGL-A1.CFG is for metric A1 size (594 x 841 mm) paper -- These are for HP small format plotters (such as model 7475A & B): HPSF-A.CFG is for A size (8.5 x 11 inch) paper HPSF-B.CFG is for B size (11 x 17 inch) paper Note that the small format plotters have the origin (0,0 point) in the upper left corner of the sheet, while the large format plotters have the origin at the center of the paper. If you use a paper size that doesn't match one of the supplied CFG files, you can make chages to the file with any ASCII editor or word processor. You must refer to your plotter manual for the correct settings for the paper size. Plotter Line Width The plotter driver HPGL-DRV.EXE has been changed. Now line widths are plotted to the exact width specified by generating multiple passes of the plotter pen. In previous versions, an element's line width was interpreted as a plotter pen selection. To compose a thick line on the plotter, the pen thickness must be accounted for. The pen thickness (tip width) is set by the fifth line in the config file (see above). PC-Draft-CAD determines the number of passes to make with the plotter pen to create the specified line width. If your plotter uses a different pen width, you must change this value in the CFG file. CAVE Drawings PC-Draft-CAD now supports the exchange of vector based drawings via online services such as CompuServe. CAVE: CAD ASCII Vector Exchange is a file exchange format designed to permit exchange of vector based (CAD) drawings via messages posted on CompuServe Information Service (CIS), or other bulletin board services. CAVE messages contain a compact description of a CAD drawing that you can view and modify. The CAVE drawing format is designed to achieve the following goals: - maintain the CAD drawing logical structure of layers, objects, and elements to facilitate repeated import/export/editing with no loss of structure. - the ASCII format is as compact as possible because of constraints of CIS message size. - by maintaining logical objects, a CAVE message may refer to library objects -- objects that do not appear in the CAVE message, thereby reducing necessary size of the CAVE message. Therefore, the CAVE drawing format closely follows the internal structure of PC-Draft-CAD drawing files. Using PC-Draft-CAD with CAVE messages To create a CAVE drawing follow these steps: 1- Load or create the drawing you wish to convert to CAVE format, 2- Press [F4] for the file menu, 3- Select [C]AVE file type, 4- Select the [S]ave operation, 5- Enter the filename (with optional drive and path information). PC- Draft-CAD uses .CAV as the default CAVE drawing file extension. 6- Press [Enter] to save the drawing in CAVE format. If the current drawing is large or complex enough to take more than 30 lines in the CAVE message, a pop up warning will give you a chance to abort the process. Press [Y] to continue if you don't mind creating "continued" CAVE messages. To load a CAVE drawing for viewing and/or editing: 1- If you have an existing drawing loaded, clear it by pressing [F9], 2- Press [F4] for the file menu, 3- Select [C]AVE file type, 4- Select the [L]oad operation, 5- Enter the filename (with optional drive and path information). PC- Draft-CAD uses .CAV as the default CAVE drawing file extension. 6- Press [Enter] to load the CAVE drawing. You may have to [Z]oom and/or [P]an the view window to display the full drawing. Extended Macro Language: ------------------------ New macro commands let you make interactive and tutorial macros: When making a macro you can insert special codes to open pop-up windows on the screen, display messages, pause macro execution, suspend macro execution (to get user input) and clear pop-up windows. Since macro files are in ASCII format, you can add these features to the macro after it is created, or you can use special commands while making the macro. Pop-up window: -------------- 1 - Press [Alt+W] while making a macro to start this command. 2 - Then move the cursor to one corner of the rectangular area to define the window size. 3 - Press [Enter]. (Don't use the mouse buttons.) 4 - Then move to the opposite corner and press [Enter], the window will appear. This puts the special code "~B" in the macro file along with numbers that indicate the window location and size. It looks like: ~B x y cols rows You can have up to 6 pop-up windows at one time. Any more than 6 will simply not work. Use the clear pop-up command to remove pop-up windows from the screen. Clear pop-up: ------------- This command erases the last pop-up window. For example, if you use the pop-up window command three times to display three windows, this command erases them in reverse order: the third window first, followed by the second, then the first. Press [Alt+K] to execute this command while making a macro. It puts the special code "~C" in the macro file. When macros finish running, PCD-CAD clears the internal stack that keeps track of them. But it does not clear windows left on the screen. Message text: ------------- 1 - Press [Alt+T] while making a macro to start this command. 2 - Then move the cursor to the place on the screen where you want the text. 3 - Press [Enter]. (don't use the Mouse buttons) 4 - Then type in the text and press [Enter], the text will appear. This puts the special code "~M" in the macro file along with numbers that indicate the text location. It looks like: ~M x y <text> It is up to you to display your text messages within pop-up windows. You have complete flexibility to locate the text anywhere. But if it is not in a window the text will not get cleared until the drawing is re-drawn (by panning, zooming, or redraw). Pause: ------ This command simply causes the macro to stop and wait for a keypress. Press [Alt+V] while making a macro to insert the pause in your macro. It puts the special code "~P" in the macro file. User Input: ----------- This command lets you suspend your macro to get input from the user. It is most useful to get the endpoint locations when drawing elements. Press [Alt+I] to suspend the macro. This puts the special code: "~S" in the macro file. When the macro reaches this code when it is played back, it will stop and accept user input until the user presses [Enter],[Esc] or a mouse button. New [S]pline command: --------------------- This new command draws a true spline curve connecting up to 64 control points. Move the cursor to the first starting point, Press [F2][S] to start (Ctrl-V from keyboard) move the cursor to the next control point, [Enter] anchors that point, move to the next point, press [Enter], and so on. As you set points, the program draws a straight line between them to show your progrss. Press [Esc] to end this command. Then PC-Draft-CAD calculates the curve, erases the straight lines and draws the curve. You can move the control points of an existing spline curve to modify the shape of the curve. Here's how: 1 - Make sure the curve element is the "current" element (it should be drawn in yellow). 2 - Select which control point to move by using the "[G]et next element" command (press [G] to move forward from point to point, or press [Alt+G] to move backward). You will see a small box drawn at the current control point. Note that when you are on the last point in the curve and press [G], it will skip on the the next ELEMENT in the current object. (And pressing [Alt+G] when on the first point moves to the previous element.) 3 - with the m[O]ve end command (press [F7][O] to select it from the Elements menu, or simply press [O] for the keyboard shortcut. Then move the point to the new location, and press [Enter]. PC-Draft-CAD redraws the element. Canges to [M]ulti-line command: ------------------------------- The Multi-line command lets you draw a series of connected line segments without starting the line command each time. In previous versions, this created a series of separate LINE elements in the drawing database. Now it creates a SINGLE element with multiple verticies. This saves space in the database. You can still move the endpoints the the lines in a multi-line element by following the three steps shown above (for the spline curve points). Note that you cannot break the multiple line segments apart into individual elements. New Utility: OBJCOST.EXE: ------------------------- OBJCOST.EXE is a very simple program. It reads PC-Draft-CAD drawing files and prints a listing of objects by name. It also reads a text file with a list of object names and costs. It uses this information to list unit costs and total costs for each object that is in the list and that is also in the drawing. It also prints a subtotal. You run OBJCOST from the DOS command line with the drawing file name as an argument. For example: OBJCOST objcost.dwg It reads a text file for the object names and item costs (the cost data file). It uses OBJCOST.DAT by default. If you want to use a different filename, use the -C command line option. For example: OBJCOST myplan.dwg -Cmyplan.dat You can print by redirecting the to the printer: OBJCOST myplan.dwg > prn or save the listing in a file: OBJCOST myplan.dwg > mydata.lst The sample drawing file (OBJCOST.DWG) and sample cost file: (OBJCOST.DAT) give the following listing: Drawing: CostTest Quan. Item Unit Cost Total ----- -------- --------- --------- 3 window 1 128.95 386.85 5 window 2 89.98 449.90 3 3-6 Door 140.00 420.00 6 2-6 Door 110.50 663.00 6 Vent3x5 49.95 299.70 4 Vent 4x8 65.40 261.60 3 Skylght1 195.50 586.50 -------------------------------------- Grand Total: 3067.55 Note that there are additional objects in the drawing. OBJCOST lists only the ones that are in the cost data file. Note that upper/lower case does not matter. You can extract different sets of data from the same drawing by using different cost data files. The format for the cost data file is very simple. Each object name is followed on the next line by its item cost. For example OBJCOST.DAT is: skylght1 195.50 vent3x5 49.95 vent 4x8 65.4 window 1 128.95 window 2 89.98 window 3 228.95 window 4 347.25 3-6 Door 140 2-6 Door 110.50 You can use OBJCOST to make the cost data file by using the -O option (Objects only). For example, the command: OBJCOST objcost.dwg -O > myplan.dat Lists the objects in MYPLAN.DAT like this: window 1 window 2 3-6 Door 2-6 Door Vent3x5 Vent 4x8 Skylght1 wall 1 You must then edit the mydata.lst file to add the unit costs for each object. Also, you must delete extra blank lines that result when there are objects in the drawing with no name (such as the one below "Skylght1" in the example). If you don't want a cost amount to appear for an object you must inter a value of 0 -- don't leave the cost line blank. Note: For this to work properly, you should give a unique name to each object in your drawing. Also, use the Object Copy command to make multiple copies of objects -- if you select the same object from an object library you will get separate objects with the same name and OBJCOST will count them separately (but since they have the same name, it uses the unit cost from the FIRST object with that name). New Cost Report: ---------------- The function of the OBJCOST program is now included inside the main program, so you don't have to run a separate program to make cost reports. The main Print menu has a hew choice: "Cost Report". This prints the cost report on your printer or to a file. The "Print Options Destination" menu choice determines whether it is printed on your printer (it's set to LPT1), or it is stored in a file (it's set to a DOS file name). The cost report function still uses a cost file with a list of object names and their prices. The Print Options menu has a new choice: "Cost File". This lets you specify which file to use to get the prices for each object you want to list in the Cost Report. You can use the OBJCOST.EXE program to create the list of objects from the drawing and then edit the file to add prices. This makes it easy to set up several different cost files with different sets of prices for your objects and change from one to the other. There is context sensitive help for each of these new menu choices. Press the [F1] key. Also note that the cost report now does not include deleted objects. We've kept the OBJCOST.EXE stand-alone program so you can still create the cost data file as described above for previous versions. New File Menu Commands: ----------------------- Save Layer command: This saves only the current layer to a new drawing file. Use this when you want to save parts of your drawing to use in another drawing. Use the Combine command to load the new drawing into the other. This does not save Fill objects. Combine command: Use this command to load another drawing into your current drawing. It combines the two drawings into one.