mag - computes TeX fontsizes and magsteps

       Piet Tutelaers
       University of Technology Eindhoven
       Maintained in TeX Live; please send bug reports or other correspondence
       to tex-k@tug.org (http://lists.tug.org/tex-k).

                                                   1 Feb 2016                                             MAG(1)

       18 December, 1989

       delim  $$ 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 $n$ magsteps equals: 1.2 sup{n} times 300 delim off rounded to its nearest
       integer value.  Fontnames for TeX fonts normally consists of the name (cmr), pointsize  (10),  type  (pk)
       and fontsize (360), for example: cmr10.360pk.

       The result of mag-R240-200.51 will be:

            167 240 263 288

       The  inverse  function is computed with the -r option. The result of mag-r-R240167240263288 will be
       the fontsteps:

            -2 0 0.5 1

       The UNIX shells allow command substitution. One can write:

            mag -r -R240 `mag -R240 -2 0 0.5 1`

       mag - computes TeX fontsizes and magsteps

mag [-Rdpi]magstep...mag [-r] [-Rdpi] fontsize . . .