v2.0

code cleanup and memory leak fix.
Can be build for PC.
Use makefile.

binary attached. Only the linux and TI89 versions has been tested.
mtograph : linux
mtograph.89z : TI89
mtograph.9xz: TI92PLUS
mtograph.v2z: V200

v1.0

this is the version that was used during math exam in 2007. No changes since then