source files: [xc]mtl.[ch]
SYNTAX
(SEND <material> :COPY [ :COPY-PROPLIST { NIL | :POINTER | :SHALLOW | :DEEP } ] )
DESCRIPTION
Return a copy of the given <material>.
If :COPY-PROPLIST is :DEEP, the entire proplist is copied (all reachable CONS cells duplicated), if it is :SHALLOW, only the top level of the proplist is copied, if it is :POINTER, only the proplist pointer is copied, else (default) nothing is done.