Closepath

closepath asks the player to reproduce a target shape by writing code for it. The language is real PostScript, the stack-based language that printers use, in a small deliberate subset: 50 50 moveto 150 50 lineto stroke draws a line, and the canvas redraws with every keystroke.

Beyond simply solving, there is a par in tokens for most levels, so a working program can still be improved, and a stack panel that shows what is on the stack at the cursor.