As part of an online class teaching Excel, in OOo 1.1 Beta 2 I entered a column
of stock prices as "aa b/c" format (integer number of dollars with fractional
dollar). Most of the values apparently came through properly when I drew a stock
price chart (low/high/close), but the fractions 1/4, 1/2, and 3/4 were not
handled properly. When the stock price is entered, using those particular
fractions, two things happened: 1)the ISO single byte character for that
fraction was used instead of three characters (num-slash-denom), which is
inconsistent with other fractional values, and 2) those prices were apparently
treated as text strings rather than numbers (plot was all messed up). It looks
like someone got fancy with numeric formatting and decided on special treatment
for 1/4, 1/2, and 3/4, with the result that they aren't recognized as numbers.