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- Command: HELP Type: Public Domain utility
-
- Purpose: Provide an on-line description of all the commands and utilities
- available on the system as well as brief descriptions of various
- features of the system.
-
- Syntax: HELP [keyword ...]
-
- Comments: The optional arguments may be any number of 1 to 8 character
- keywords separated by blanks. For example,
-
- HELP Displays a menu for entry of a keyword.
-
- HELP ? Displays a brief summary of On-Line HELP.
-
- HELP HELP Displays a detailed description of HELP.
-
- HELP command Displays HELP for the specified command.
-
- HELP feature Displays HELP for the specified feature.
- Features supplied with On-Line HELP are:
-
- AUTOEXEC Special automatic batch file.
- BATCH Batch file sub-commands.
- COMMANDS List of DOS commands.
- CONFIG Configuration file sub-commands..
- FILTERS Processing standard input/output.
- PIPES Piping output between programs.
- PUBLIC List of Public Domain Programs
- REDIRECT Redirecting standard input/output.
-
- HELP keyword ... Displays the HELP file for each requested
- command or feature in sequence.
-
- Keywords can be entered in either upper or lower case. Entry
- of HELP with no keywords displays a keyword entry menu in
- which keywords may be entered into an eight character keyword
- entry field. In addition to character keys allowed in DOS
- filenames, the following keyboard keys are available:
-
- Left Moves cursor one character to the left.
- Right Moves cursor one character to the right.
- Home Moves cursor to the beginning of the field.
- End Moves cursor to the end of the entry.
- Insert Inserts one blank character at the cursor.
- Delete Deletes the character over the cursor.
- Backspace Deletes character to the left of the cursor.
- Escape Erases the current entry.
- Enter Displays HELP for the current entry or quits.
- ? Displays brief instructions in using HELP.
-
- Pressing any other key produces a soft speaker tone. Press
- Enter to display HELP for the current keyword entry. Entry
- of an invalid keyword on either the command line or on the
- keyword entry menu produces a loud speaker tone, and the
- entry menu is displayed with the invalid entry to be edited.
- By definition, an invalid entry is one for which the
- corresponding file with extension .### does not exist in the
- current data file path. Keywords entered on the command line
- are described in sequence with interruptions by the entry
- menu as invalid entries are encountered. Pressing Enter
- while the entry field is blank either returns to processing
- of command line entries or, if there are no such entries
- outstanding, to the operating system at the point where HELP
- was invoked.
-
- Following acceptance of a valid keyword, up to 8 pages of text (23
- lines each) are displayed from the file that describes that
- keyword. On any HELP screen, the following keyboard keys are
- available:
-
- Up Scrolls the file up one line.
- Down Scrolls the file down one line.
- Page Up Scrolls the file up one page.
- Page Down Scrolls the file down one page.
- Home Displays the first page in the file.
- End Displays the last page in the file.
- Enter Returns to entry menu or next HELP request.
- Escape Returns to the operating system.
-
- Pressing any other key produces a soft speaker tone. The
- bottom line of the display summarizes these functions and
- indicates when the end of the file has been reached.
- Pressing Enter returns control to the keyword entry menu or
- returns to processing of command line entries if any such
- entries are outstanding. Pressing Escape returns control to
- the operating system, and the the last HELP screen remains
- displayed and the cursor is placed on the bottom line of the
- display.
-
- The notation used in HELP files to describe the correct command
- syntax is compatible with that used in the IBM DOS manual.
-
- [brackets] Items in brackets are optional. To include optional
- information, type only the information within the
- brackets and not the brackets themselves.
-
- ...(ellipsis) An ellipisis (...) means that you can repeat an
- item as many times as necessary.
-
- drive: Refers to a disk drive name. You need to specify a
- drive name only if you are using a file that is not
- on the default drive.
- Information transferred between two disks is sent
- from a source drive to a target drive.
-
- path Refers to a directory name with the following
- syntax:
- [\directory][\directory...]\directory
-
- filename Refers to a file, and includes any filename
- extension. The filename option does not refer to a
- device or drive name.
-
- pathname Refers to a path plus a filename. Pathname uses the
- following syntax:
- [\directory][\directory...]\filename
-
- switches Control DOS commands. Switches begin with a slash;
- for example: \s
-
- arguments Provide more information to DOS commands. You
- usually choose between arguments; for example:
- ON or OFF
-
- string Many commands work with strings of text. A string
- is a group of characters that can include letters,
- numbers, spaces, and any other characters.
-
- The global filename characters are ?, which indicates that any
- character can occupy that position, and *, which indicates that
- any character can occupy that and all remaining positions in the
- filename or extension.
-