Undo
With this function you can undo any of the edit or insert operations which can be performed in Plot Preview.
Prerequisites: The Plotting window.is open.
To run this function: In the Plotting window, choose Edit > Undo, or...
These edit operations are maintained in a 'stack' where the most recent edit operation is added to the top of the stack so that when you use the Plot Undo function the most recent edit operation can be removed from the top of the stack so that it can be undone.
The undo stack has no limit (subject to memory restrictions) on the number of edit operations which it can retain.
You may wish, as a matter of convenience to delete all information from the undo stack so that it is empty. To do this use the PLOT CLEAR UNDO function.
Note: Only two other functions will cause the undo stack to be cleared.
These are, Recall Plot when using the replace option and Plot Exit which deletes all information (the in memory copy not the disk file) pertaining to a plot.
The most recent delete, change, move or insert operation will be undone and the screen will be updated accordingly.
No more Plot Preview operations to undo
This message is displayed when there are no more edit operations in the undo stack.