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BACKSCRL.###
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1985-01-20
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2KB
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47 lines
COMMAND: BACKSCRL (Back Scroll) DOCUMENTATION : On-line
FUNCTION: Creates a variable-length circular screen buffer to permit scrolling
forward and backward through recently displayed data.
FORMAT: BACKSCRL m,n
TYPE: User supported software (The Kampro Group,PO Box 90654,
Honolulu, Hawaii 96835)
REMARKS: m is an integer from 1-28 to specify the number of screen pages to
be buffered. Each screen takes 2000 bytes of memory.(Default=4)
n is an integer from 1-25 to specify the number of lines that will
be scrolled at one time.(Default=25)
BACKSCRL is installed as an extension to DOS from the DOS prompt or
from an AUTOEXEC.BAT file. Once installed, its action is transparent
to any application program and it can be activated at any time by
pressing Ctrl-Space Bar. The current operation is suspended and the
current screen display is saved. A number wil appear in the upper
right corner of the display indicating the number of the current line
in the screen buffer, counting from the last line. BACKSCRL only
supports 80 column text mode displays in either color or monochrome.
The following commands are available in BACKSCRL:
Ctrl-Space Bar: Activates the scrolling function of BACKSCRL.
Ctrl-Return: Stores the current screen in the buffer and returns to the
current operation.
Home: Moves the cursor up one line in the buffer.
End: Moves the cursor down one line in the buffer.
Cursor Up: Scrolls the screen up one line at a time.
Cursor Down: Scrolls the screen down one line at a time.
Page Up: Scrolls the buffer up one page at a time.
Page Down: Scrolls the buffer down one page at a time.
Minus (-): Marks the beginning of a block to be printed.
Plus (+): Marks the end of a block to be printed.
PrtSc: Prints the marked block on LPT1.
Space Bar Terminates the scrolling function. The suspended operation
or Return: is continued from the point that it was suspended.