The program:

SET COLOR "green"

SET WINDOW -1.4*5,1.4*5,-5,5

BOX LINES -1,1,-1,1

BOX CIRCLE 1,2,1,2

SET COLOR "red"

FLOOD 1.5,1.5

SET COLOR "blue"

PLOT TEXT, AT -.5,0:"AMES 5"

PLOT TEXT, AT -.5,-.5:"rules!"

END

The output:

A centered square box colored green, a green circle filled in with red to its upper right, two blue lines of text centered in the box.