possibility to enter arithmetic terms in value fields, at least allow simple + and - calculations 1 vote Vote Vote Vote Vote We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close 1 vote 2 votes 3 votes Remove votes You have left! (?) (thinking…) Ben Kaufner shared this idea · Oct 19, 2010 · Report…Report… · Edit… · Delete… · Admin → Tweet Add a comment… We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close Post comment Submitting... An error occurred while saving the comment