[pdftex] unicode in pdftex

[Peter Schröder]

I want to specify some symbols in unicode in the document info string
and in section titles. \366 (for o-umlaut) works as expected, but how do
I get the sqrt symbol? In unicode it is at hex 221A. Naive translation
into a 5 digit octal code did not do the trick. How do you get those
beasts?

Peter