Call invocation format

>>-CALL--ISPEXEC--(buf-len,--buffer);--------------------------><

OR

>>-CALL--ISPLINK--('FTINCLbb',--skel-name--,-+------------+----->
                                             '-'NOFTbbbb'-'   

>--,-+------------+--);----------------------------------------><
     '-'EXTbbbbb'-'       

Return codes

 0

Normal completion.

 8

Skeleton does not exist.

12

Skeleton in use; ENQ failed.

16

Data truncation occurred or skeleton library or output file not allocated.

20

Severe error.