Hints and tips

Maximum LSM window display lines
When displaying multiple variables use the LANGUAGE VSEP OFF command. This increases the number of screen lines available to display the variable information.
z/OS Dataset Conventions
On z/OS, ASMIDF and ASMLANGX commands do not change. The CMS conventions are used, with the following mapping of the CMS file conventions to z/OS:
CMS

z/OS Equivalent

fn

PDS member name (ignored if using sequential file)

ft

DDNAME, which in turn points to the z/OS dataset name

fm

not used on z/OS

You must allocate the DDs using ALLOC (CLIST or EXEC) or DD (JCL).
z/VSE Dataset Conventions
On z/VSE, ASMIDF and ASMLANGX are invoked from JCL, with the following mapping of the CMS file conventions to z/VSE:
CMS

z/VSE Equivalent

fn

z/VSE librarian member name.

ft

DLBL name, which in turn points to the z/VSE file name.

fm

not used on z/VSE