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1993-04-10
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.MDUL/.MDNM/
FONTEDIT
Command
Michael Mefford
1988 No. 15 (Utilities)
Purpose: Permits modifying/creating EGA or VGA character fonts with
keyboard or mouse and saving the new fonts as .COM files that can be loaded
from the DOS prompt.
Format: FONTEDIT
Remarks: If no font filename and path are supplied as the FONTEDIT uses
the currently-displayed font, beginning with the letter A. Pixels in the Edit
window are toggled on or off with the spacebar or with left and right mouse
buttons. The highlighted cursor may be moved within the Edit window by mouse
or with the cursor Arrow keys, and it can be "dragged" to adjacent pixels by
holding down a Shift key or mouse button. Editing changes are saved by
pressing F4, and opportunity is provided to supply a missing filename.
FONTEDIT will supply the requisite .COM extension automatically. Esc quits
the program.
Pressing F5 copies the original character template to Edit window.
New characters to edit can be loaded by pressing the appropriate key on the
keyboard, by pressing the PgUp and PgDn keys (which move in ASCII sequence),
or by holding down the Alt key while typing the ASCII code on the numeric
keypad, then releasing Alt. The Tab key toggles the cursor between the Edit
window and the full Character Set window. Highlighted characters in the
latter can be loaded for editing by pressing Enter or one of the mouse
buttons.
The F1, F2, and F3 keys affect all characters within the entire font.
F1 (or the Del key) deletes a whole row of pixels, and is used to shorten the
height of the character box. The default (and maximum) character box size is
8 pixels wide (this cannot be changed) by 14 pixels high (EGA) or 16 pixels
high (VGA). A 43-line EGA font uses a character box of 8 by 8 pixels, for
example. When using F1 (or Del) confirmation of the deletion is required.
F2 inserts a blank row of pixels throughout the entire font (maximum height
permitting), and F3 copies each character's current pixel map, as, for
example, to thicken a serif.
Modified or created fonts are loaded simply by entering their names at
the DOS prompt. Normal operation is restored by entering any video mode
command, for example MODE CO80, on a color system or MODE MONO in monochrome.
Applications that reset the video mode on entry or when returning from DOS
also restore the default ROM font and cannot be used successfully with
FONTEDIT.