Grap \(em A Language for Typesetting Graphs g Tutorial s Using grap s Reference Manual s data file s awk c arithmetic horizontal lines s one-dimensional data plotting symbol s scatter plot size changes s two coordinate systems s ticks command p tick-location s pic C troff c macro s comment s /usr/lib/grap.defines S arrow S blob S bullet S by clause p circle S coord S copy S copy thru S dashed S dotted S draw S else clause p UL exp S for statement p frame S graph command p grid S if statement p if-then-else statement p in clauses p include S UL label S UL line S log S UL new p UL next S UL plot c print statement p printf S rand S scatmat program f sh command f sh statement p sin S size clause p size command p solid S sqrt S square S stderr c thru parameter p ticks off S ticks statement p until clause p width attribute p with clause p typesetter graphics vticks S graphics g ideal C eqn C predefined macros s ~commented ~least squares ~by clauses define S ~defines I plot c G1 S G2 S immediate macro s