! show_pattern.jnl
! 	shows up to the first 10 patterns in a .pat file 
! 	in a color or colors of the user's choice
!
!	INPUTS
!		1: (required)		.pat pattern file name
!
!		2: (optional)		color palette name
!					(default=black)

define symbol patternfile  $1"default"
define symbol palettecolor $2"black"
shade/nokey/nolab/set/i=1:100/j=1:100/lev=(1,101,10)/pattern=($patternfile)/palette=($palettecolor) i+j-j+0.5
ppl tics 0,0,0,0
ppl axlabp 0,0
ppl labs/nouser,1,0,-0.4,-1,"@AC($patternfile)"
ppl hlabs, 1, 0.25
go margins 0.5 0.5 0.5 0.5
ppl shade
ppl shaset reset