[Koha-devel] meaning of branch categories? (and perhaps the "issuing" field?)

Hello, I am looking at branches.pl and, right now, in particular the "branch categories" stuff, which is related to Bug 130. I wonder if anyone knows what categoryname and codedescription mean? Both are "text" fields. Looking at some old articles, it seems that CU and IS used to be predefined branch catagories, and the Koha code is still testing for these. So this branch categories stuff seems to be also related to Bug 202. (Does IS mean "issuing"? Perhaps IS got superceded by the "issuing" field? But the "issuing" field is never initialized; it seems to stay at NULL.) Thanks ^_^ -- Ambrose LI Cheuk-Wing <a.c.li@ieee.org>