it seems some databases are not functional if you don't feed them with a title. the mathematical association of america calls me professor. well, thanks, that's nice, but - just for the record: i never said this. i also never tried to proof that ∣OP∣∙∣OQ∣ = a² - b² and sadly so, i guess i will never try.

... as i still have problems with hex and unicode. since when - and where - are the developers of browsers on vacation?