showtile.icn: Program to display tiles

This program displays pattern tiles given in standard input.

The options are:

     -P      show pattern produced by tile; default show tile
     -i s    create image files with prefix s
     -a      run without waiting for event in window
     -u      don't show on-screen images; implies -a
     -p i    start with page i
     -r i    number of rows, default 7 for -P, otherwise 10
     -c i    number of columns, default 6 for -P, otherwise 12
     -n s    number pages using s as a prefix
     -w i    width of area for tile; default 48 unless -P
     -h i    height of area for file; default 48 unless -P
     -d      add date line