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##
del

       'del'  ['p'|'l'|'l0'|'c'|'s'|'b'|'S'|'L'|'se' <entity>]|
              ['se0']|
              ['mesh']|
              ['pic']

This keyword is used to delete entities, the whole mesh (see also qdel) or an background-picture. For example,
del se part
will delete the set part but all included entities are still there. There is only no set part any more. The following entities are known:
Points p, Lines l, Combined lines c, Surfaces s, Bodies b, Nurb Surfaces S, Nurb Lines L and Sets se.
When an entity is deleted, all dependent higher entities are deleted as well. Special cases are
del l0 set
were all lines with zero lenght in set ``set'' are deleted and
del se0
will delete all empty sets. If a background-picture was loaded with the ``read'' command it can be deleted with:
del pic