Write descriptor value(s)

Modifying the contents of an existing descriptor or creating a new descriptor and its associated data is achieved via STDWRC (SCDWRC) for character descriptors, STDWRD (SCDWRD) for double precision descriptors, STDWRI (SCDWRI) for integer descriptors and STDWRR (SCDWRR) for real descriptors. Contrary to keywords, which have a fixed size, the descriptor data  area may be extended at any time.

Note

Again the interface for character descriptors has an additional parameter as discussed above.