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- COMMAND: HELP DOCUMENTATION : On-line
-
- FUNCTION: Provides 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.
-
- FORMAT: HELP [keyword ...]
-
- TYPE: Public domain utility, Version 5.1.
-
- REMARKS: 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 On-Line HELP.
-
- HELP command Displays HELP for the specified command.
-
- HELP feature Displays HELP for the specified feature.
- Features supplied with HELP are:
-
- AUTOEXEC Special automatic batch file.
- BATCH Batch file sub-commands.
- CONFIG Configuration file sub-commands..
- FILTERS Processing of standard input/output.
- PIPES Piping of output between programs.
- REDIRECT Redirection of standard input/output.
- COMMANDS Annotated list of all commands.
-
- 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, while 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 manuals, except
- that the vertical bar used by IBM to indicate "or" is replaced by !.
- In particular:
-
- Keywords are given in capital letters, but may be entered in either
- case. Words in lower case must be substituted for as described in
- the remarks. Items in square brackets ([]) are optional. Do not
- enter the brackets. Items separated by a ! means that you enter
- one or the other, but not both. An ellipsis (...) means that the
- preceeding item may be repeated. Punctuation other than [] and !
- must be included as shown.
-
- d: denotes a drive, either fixed or floppy.
- path denotes a sequence of directory names of 1-63 characters.
- filename denotes a disk file name of 1-8 characters.
- .ext denotes an optional file extension of 1-3 characters.
- filespec denotes a file name of the form filename.ext
-
- 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.
-
- Note that beginning with IBM DOS 3.0 all external commands may be
- preceeded by a drive and path specification.