Module Delete

This option allows the user to delete a module from the Data 
Analysis Graph.  Modules which have output pipes may NOT be 
deleted.

When this option is selected, the status line in the main Pablo 
window will change to "Waiting for node selection or exit".  To 
select the module to be deleted, position the mouse over the 
appropriate module bubble in the graph and press the left mouse 
button. The selected module and any input pipes associated with 
it will be removed.  

If the Module Delete item is erroronously selected, it is possible 
to exit without deleting any modules by positioning the mouse over 
a module bubble in the graph and pressing the right mouse button.
