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+.\" e
+.TH MAG 1 UMFT
+.de EX
+.sp
+.in +5
+.nf
+.ft CW
+..
+.de EE
+.in -5
+.ft R
+.sp
+.fi
+..
+.SH NAME
+mag \- computes fontsizes and magsteps
+.SH SYNOPSIS 
+.B
+mag
+[-\fBR\fIdpi\fP\fP] magstep . . .
+
+.B
+mag
+[-\fBr\fP] [-\fBR\fP\fIdpi\fP] fontsize . . .
+
+.SH DESCRIPTION
+.EQ
+delim $$
+.EN
+This tool calculates fontsizes given magsteps.  TeXfonts are provided as
+true sized fonts or as magnifications.  The fontsize of a true sized
+font equals the resolution of the printer (ex.  300).  The fontsize
+of a font magnified $n$ \fImagsteps\fP equals:
+.EQ
+1.2 sup{n} times 300
+delim off
+.EN
+rounded to its nearest integer value.  Fontnames for TeX fonts normally
+consists of the name (\fIcmr\fP), pointsize (\fI10\fP), type (\fIpk\fP)
+and fontsize (\fI360\fP), for example: \fIcmr10.360pk\fP. 
+
+.SH EXAMPLES
+The result of \fImag -R240 -2 0 0.5 1\fP will be: 
+.EX 
+167 240 263 288 
+.EE
+
+The inverse function is computed with the \fI-r\fP option. The result of
+\fImag -r -R240 167 240 263 288\fP
+will be the fontsteps:
+.EX
+-2 0 0.5 1
+.EE
+
+The UNIX shells allow command substitution. One can write:
+.EX
+mag -r -R240 `mag -R240 -2 0 0.5 1`
+.EE
+
+.SH DATE
+18 December, 1989
+
+.SH AUTHOR
+.nf
+Piet Tutelaers
+University of Technology Eindhoven
+<rcpt@urc.tue.nl>
+