Syntax
where
We use the XGRID: command to remove node and arc definitions.
All nodes associated with the named elements and
bases, and any arcs connecting them to any other arcs, are removed. The
XBASE: and XELEMENT: commands will also remove any arc
and node definitions for the quantities to be deleted. Note that if a
node has been associated with a base then the node remains defined
whilst the base remains defined, whatever the contents of the base.
See §6.2 for
details of specifying collections for the definition part.
are the names of elements or bases.