Joined: 06 Jun 2008 Posts: 8165 Location: East Dubuque, Illinois, USA
I'm sure YOU know what you're asking. However, it's not clear on this end if you're talking about:
1. Length of a variable name in PL/1
2. Length of a numeric variable definition (which depends on the type)
3. Length of a string variable definition
For the latter two, check the Language Reference manual (link at the top of the page, Appendix A, Limits). The first can be found in the Programming Guide (link at the top of the page, Appendix A, Limits).