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1.1 ! root 1: .TH prtxfont 5G "WH" MARX ! 2: .SH NAME ! 3: prtxfont \- character sets for prtx ! 4: .SH DESCRIPTION ! 5: .P ! 6: A font file describes for each character the dots that \fIprtx\fR ! 7: should use to construct that character. ! 8: Any character not described in the file is treated as a blank. ! 9: Only characters 0 through 127 are allowed. ! 10: .P ! 11: The first line of a file contains an integer NR giving the number ! 12: of rows of dots in each character. ! 13: .P ! 14: Except for the first each line contains a character designator ! 15: followed by the description of that character. ! 16: The character designator is either the character itself or ! 17: "\n" where n is the octal representation of the character. ! 18: .P ! 19: A character description consists of NR strings. Each string ! 20: consisting of some number of "dot descriptions", and separated ! 21: from the preceding string or the character designator by spaces. ! 22: Conceptually a character is formed by placing the strings on ! 23: top of each, left aligned, with the first on top. For normal ! 24: size characters each dot description corresponds to a potentially ! 25: printed dot. For larger characters each description corresponds ! 26: to several dots and indicates a pattern for the dots. ! 27: .P ! 28: The possible dot descriptions are: ! 29: .TP 10 ! 30: 1 ! 31: Fill in the entire area. This is the only description that causes a ! 32: dot to be printed at the normal size. ! 33: .TP 10 ! 34: 0 ! 35: Leave the entire area blank ! 36: .TP 10 ! 37: a ! 38: Fill in the upper right hand corner ! 39: .TP 10 ! 40: b ! 41: Fill in the lower right hand corner ! 42: .TP 10 ! 43: c ! 44: Fill in the lower left hand corner ! 45: .TP 10 ! 46: d ! 47: Fill in the upper left hand corner ! 48: .TP 10 ! 49: A ! 50: Fill in the the area but leave a wedge blank on the left hand side. ! 51: The descriptions with omitted wedges are useful for constructing ! 52: pointed characters. E.g. 'A' might be used at the right hand part ! 53: of a '>' ! 54: .TP ! 55: B ! 56: Fill in the area but leave a wedge blank at the top. ! 57: .TP ! 58: C ! 59: Fill in the area but leave a wedge blank at the right. ! 60: .TP ! 61: D ! 62: Fill in the area but leave a wedge blank at the bottom. ! 63: .SH AUTHOR ! 64: Jerry Schwarz (harpo!jerry)
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