Assume that the following script is in a file called "multi.plot".
data test.dat xcolumn 1 ycolumn 2 ydimension 3 xlabel Angle ylabel COS( Angle ) plot yrescale ylabel SIN ( Angle ) noxlabel xnumbersize 0. plot title Two Panels
To make a graphic, you would type
plotl multi.plot
which would produce a graph like: