OFFICE-2224: better description for TBILLEQ, native speaker needed

Hi,

http://tools.oasis-open.org/issues/browse/OFFICE-2224

says

| "bond-equivalent yield for a treasury bill" is probably lifted from
| Excel's Help, and comes across as jargon; needs more explanation,
| especially for non-US people.

I'd need a native English speaker knowledgeable in that domain to solve
that..

  Eike

-- 
Automatic string conversions considered dangerous. They are the GOTO statements
of spreadsheets.  --Robert Weir on the OpenDocument formula subcommittee's list.