Set user field in mapping
W = SETUSER(W,S,FIELD)
Set or reset the subfield FIELD of the user field of W by S.
Note the the USER field of mappings was originally intended for a user defined description of mappings. Later its usage was extended to a field for storing general information on mappings. For that reason 'old' mappings without a structure in the user field are transformed such that this information is stored in a subfield USER in the user field. It can be retrieved by GETUSER(A,'USER').
Note also that for reasons of backward compatibility the parameter order of the SETUSER command differs from similar Matlab commands like SETFIELD: first field content, then field name.