Deleting selection Sets

[Howard Wolowitz]

For a web application under UNIX I need to call filepro's directory 
program (ddir) and have it delete a selection set.
The directory program's help page doesn't show any flags for selection sets.

Here is the help page:
      Directory (FILEPRO DIRECTORY FLAGS - ddir,dprodir)

4.0     -A              delete entire file including formats & qualifiers.
4.0     -Ftype name name ...    deletes individual formats specified by
                         format type & format name. (E)dit, (S)creen,
                         (P)rocessing table, (O)output, (B)rowse,
                         (T)oken table, browse (L)ookup.
                         Note: the L code deletes ALL of the browse lookup
                         formats in the file.

Notice - no selections set.

Anyone?

Howie