You can now surround the @ or @@ in a posting with parens to prevent it from being added as a historical price. This means that ask for a -V report will value that posting according to whatever conversion price was seen prior to it.
This is useful if you have an exception transaction -- like, your Dad trades
you $10 for 100 GBP for your birthday -- and you don't want it affect reports
as if it was a real price conversion.
2012-03-09 KFC
Expenses:Food 10 chicken (@@) $100
Assets:Cash
John
