The ISPF variables that
are specified by both ISPMSG= and ISPCSR= are set by the VDEFINE user
exit whenever the exit finds an ISPF variable that has a zero length,
or whenever the SAS informat that is associated with the variable
finds the value invalid. The SAS VDEFINE user exit identifies
variable-name to
ISPF as a character variable length of eight, placing it in the pool
of functions that are automatically specified.
To display the current
settings of your ISPF options, use PROC OPTIONS GROUP=ISPF