The name of the ISPF function pool variable that stores the dslist
ID of the data set list. The LMDINIT service always generates a unique
dslist ID. The dslist ID is an input variable to the other library
access services that work with data sets, and is an output parameter
from the LMDINIT service. The maximum length for the dslist ID is
8 characters. To invoke the service, you must specify the dslist
ID variable name and Level, Volume, or both.
In the LMDINIT
service, dslist-id-var is the name of the variable that stores the
data ID (for example, LISTID(DDVAR)). When you use the dslist ID keyword
with other services, you must pass the value of the variable (for
example, LISTID(&DDVAR)).