You can delete named psets that you have defined. You cannot delete any predefined pset except cycle; see " The cycle Pset". To delete a pset:
From the Psets window - Choose the Delete selection from the Options menu. This displays a list of psets that you can delete. Click on the name of the pset you want to delete. If it is currently displayed in the Psets window, it disappears.
From the command line - Issue the delete pset command, using a pset qualifier to specify the name of a user-defined pset. For example,
delete pset xon
deletes the pset named xon.
See " Events Taking Pset Qualifiers (MP Prism Only)" for a discussion of the effect of deleting a pset on events that have been defined to affect the members of that set.