Annotate_2D:
By: Hrishi Shah
June 2009

A 2D Graph Annotator with mouse capabilities and visualization.

Instructions:
1) Click anywhere on the axis to be annotated or select from the list.
2) Click 'Annotate Selected' (It will come to the forefront).
3) Select 'Arrow' or Circle/Ellipse option
4) Change properties like LineStyle, LineWidth etc to suit your annotation
5) Change 'ArrowType' OR Aspect Ratio and Ellipse Angle as applicable
6) If you wish to change properties of the last drawn object,
   Check the "Property changes after drawing" Checkbox
7) If you don't like the last drawn Object, hit "Delete Last" Button or "Delete" key.
8) Click 'Stop Annotating' or close the GUI to end the routine.

Caution:
1) I have used 'hold on' command inside of the function.
   To revert back, 'hold off' command may be used.
2) I have set the axis as manual.
   To revert back, 'axis auto' command may be used.

Future Work:
Let me know if you desire any more editing features.