I was contacted by Anne and Freddy asking for some math notation improvement – specifically they need a hat-like decoration over a multi-letter variable to represent an angle, like ‘ABC’ with a wide hat or arc above it. The quick fix I could do for them is to make the already existing hat decoration width limit twice as wide as before. You can download the new v1.81 beta3 from: http://www1.datafilehost.com/d/1dd940a2

Except this specific issue, the only other new feature compared to beta2 is the ability to type compound measurement units easier (and some bugs are also exterminated). You can now cast the first measurement unit the usual way (say, by casting \kg command) and then any further variable you enter will also be converted to the measurement unit – until you type something that cannot be part o a compound measurement unit (like the ‘+’ sign).