FONTS -- Standard Character Fonts Supplied with each Node. 83/08/15
A "font" is data that graphically describe a set of related character images.
Fonts are stored in named files on a node. A font file contains exactly one
font.
We supply three kinds of fonts in the directory /SYS/DM/FONTS. They are:
1. Fixed width fonts. These correspond to the fonts typically found
on "dumb terminals". All the characters are the same width.
Several sizes are available. These fonts are named according to
their width in raster units, and their height above the base-line,
again in raster units. Italic and boldface versions have ".i" or
".b" appended; inverted (reverse-video) fonts have ".iv" appended.
Included in these fonts' total size is intercharacter spacing (two
raster units in all cases), interline spacing (one to three raster
units), and descenders (parts of characters, such as "y", that go
below the base-line) (three to five raster units). Table 1 lists
the available fixed width fonts, and their actual total sizes.
Table 1. Fixed Width Fonts
Total Width Total Height
f5x7 7 11
f5x7.iv 7 11 inverted version of f5x7
f5x9 7 14 same as std.19L
f5x9.iv 7 14 inverted version of f5x9
f7x13 9 19 same as std
f7x13.i 9 19 italic version of std.
f7x13.b 9 19 bold version of std.
f7x13.iv 9 19 inverted version of std.
legend 9 19 same as f7x13 but with pixel
values inverted for window
legends.
f9x15 11 23
f9x15.iv 11 23 inverted version of f9x15
2. Proportional spaced fonts. In these fonts the characters have
different widths. They can be used in typesetting and advanced
text processing applications. We do not currently offer
applications which utilize these fonts, although the DM will
properly display and edit text using these fonts. Their names
include the type style and the "point" size, where one point is
1/72 inch. Proportional spaced fonts currently available are:
nonie.r.16 a large, attractive, block letter font
r.12 regular,
i.12 italic,
b.12 and bold versions of a roman font
old_english.36 a very large font
3. Special purpose fonts. Applications programs use such special
fonts in a variety of ways. The font editor (type HELP EDFONT) can
be used to design such customized fonts. As an example, the
CHESS.36 font is included among the distributed fonts. (The number
36 indicates the font's point size.)
4. The icon font is another type of special purpose font. When you
change a window into an icon, the DM displays an icon character
that describes the type of information the window displayed, such
as an edit pad, a graphics file, or a Shell transcript pad. The
system holds the default icon charcters in a font file called
/SYS/DM/FONTS/ICONS. If you desire, you can examine or change this
file using the EDFONT program described in the appendices. You can
load your own icon font using the Display Manager command FL
(FONT_LOAD).
The naming conventions for fonts have evolved over time. For this reason, a
number of links have been made within the /SYS/DM/FONTS directory to preserve
compatibility with older names.
RELATED TOPICS
More information is available. Type:
- HELP FL
for details about loading fonts for use in pads.
- HELP EDFONT
for details about the character font editor.
- HELP ICON
for details about icons.