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Test Your Knowledge in Computers #540
Difficulty: Medium
In dynamically typed programming languages. instead of declaring a variable to have a particular type, the type of a variable is determined by an A.I. in the operating system.
True or False?
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vwidth(1) [bsd man page]

VWIDTH(1)						      General Commands Manual							 VWIDTH(1)

NAME
vwidth - make troff width table for a font SYNOPSIS
vwidth fontfile pointsize > ftxx.c cc -c ftxx.c mv ftxx.o /usr/share/font/ftxx DESCRIPTION
Vwidth translates from the width information stored in the vfont style format to the format expected by troff. Troff wants an object file in a.out(5) format. (This fact does not seem to be documented anywhere.) Troff should look directly in the font file but it doesn't. Vwidth should be used after editing a font with fed(1). It is not necessary to use vwidth unless you have made a change that would affect the width tables. Such changes include numerically editing the width field, adding a new character, and moving or copying a character to a new position. It is not always necessary to use vwidth if the physical width of the glyph (e.g. the number of columns in the bit matrix) has changed, but if it has changed much the logical width should probably be changed and vwidth run. Vwidth produces a C program on its standard output. This program should be run through the C compiler and the object (that is, the .o file) saved. The resulting file should be placed in /usr/share/font in the file ftxx where is a one or two letter code that is the logical (internal to troff) font name. This name can be found by looking in the file /usr/share/fontinfo/fname* where fname is the external name of the font. SEE ALSO
fed(1), vfont(5), troff(1), vtroff(1) BUGS
Produces the C file using obsolete syntax that the portable C compiler complains about. 4.2 Berkeley Distribution October 22, 1996 VWIDTH(1)

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HPFTODIT(1)						      General Commands Manual						       HPFTODIT(1)

NAME
hpftodit - create font description files for use with groff -Tlj4 SYNOPSIS
hpftodit [ -sv ] [ -in ] tfm_file map_file font It is possible to have whitespace between the -i command line option and its parameter. DESCRIPTION
hpftodit creates a font file for use with groff -Tlj4 from an HP tagged font metric file. tfm_file is the name of the tagged font metric file for the font. map_file is a file giving the groff names for characters in the font; this file should consist of a sequence of lines of the form: n c1 c2 ... where n is a decimal integer giving the MSL number of the character, and c1, c2,... are the groff names of the character. font is the name of the groff font file. The groff font file is written to font. The -s option should be given if the font is special (a font is special if troff should search it whenever a character is not found in the current font.) If the font is special, it should be listed in the fonts command in the DESC file; if it is not special, there is no need to list it, since troff can automatically mount it when it's first used. If the -i option is used, hpftodit will automatically generate an italic correction, a left italic correction and a subscript correction for each character (the significance of these parameters is explained in groff_font(5)). OPTIONS
-v Print the version number. -s The font is special. The effect of this option is to add the special command to the font file. -in Generate an italic correction for each character so that the character's width plus the character's italic correction is equal to n design units plus the amount by which the right edge of the character's bounding is to the right of the character's origin. If this would result in a negative italic correction, use a zero italic correction instead. There are 8782 design units per em for Intelli- font fonts. Also generate a subscript correction equal to the product of the tangent of the slant of the font and four fifths of the x-height of the font. If this would result in a subscript correction greater than the italic correction, use a subscript correction equal to the italic correction instead. Also generate a left italic correction for each character equal to n design units plus the amount by which the left edge of the character's bounding box is to the left of the character's origin. The left italic correction may be negative. This option is normally needed only with italic (or oblique) fonts. FILES
/usr/share/groff/1.18.1/font/devlj4/DESC Device description file. /usr/share/groff/1.18.1/font/devlj4/F Font description file for font F. BUGS
This program was written without the benefit of complete, official documentation on the tagged font metric format. It is therefore likely that it will fail to work on tfm files that are dissimilar to those for the internal fonts on the Laserjet 4, with which it was tested: TrueType tfm files are not supported. SEE ALSO
groff(1), grolj4(1), groff_font(5) Groff Version 1.18.1 Apr 2002 HPFTODIT(1)

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