Modifying FreeRADIUS queries [from the wiki]

I apologize if this is a trivial question, but I cannot find an explanation regarding my specific question. I have seen the following entry in the wiki regarding taking into account Gigawords: *snip* Modify FreeRADIUS Queries Secondly, modify the accounting queries in sql.conf to make the

Re: Modifying FreeRADIUS queries [from the wiki]

Jeff Wark wrote: I understand the left shifting of the Gigawords value and the subsequent 'or'-ing of the Acct-Input-Octets value to produce one 64-bit value. The part that confuses me is the repeated occurrence of the ':-0' at the end of each variable. What is the purpose of this? I have