The X_Y_plotter software is the software use to plot the diagam by 
loading the file format either with extension ".mind" or ".txt". The 
format of this file as following: 

EXAMPLE:
PU+20,-30;PU+15.+30;PD-22,+35;..................

PU or PD indicate the whether the pen is down or up position. The simbol
+ or - indicate the direction of the motion. Following the direction is coordinat
which first one is X coordinat and second is Y coordinat (relative coordinats). 
The simbol "," separate the X and Y relative coordinat. The simbol ";" shown the 
end of the coordinat set.

The OpenFile1 software use to convert the plotter file (extension ".plt")
to the file format as mentioned above which either can be save as .mind
or .txt format.

The source code no well organize and no document for it. I write this code just 
to train my programming skill. I may not further to improve the software. 
If you are interest to improve the software, welcome email to me.
I will sent you a copy of source code. 


