Linux Journal: Calculating in OpenOffice.Org Text Documents

“OpenOffice.org is an open-source office suite. It can replace
other office suites and has excellent file interchange filters. It
runs on several operating systems, including Linux, Solaris,
Macintosh OS X and Windows.

“As an independent contractor, I have to bill customers in order
to eat. As I’d rather be hacking Linux, I have incentive to make
invoicing as simple and easy as possible. Sometimes customers are
late paying, and I have to age their account, that is, show which
parts of the invoice are 30, 60 and 90 or more days past
due…”

Complete
Story