i don't actually know how to code in xml exactly but i am betting that the interpreter sees that as a line terminator or switch of some sort. ever noticed in source code how sometimes you see stuff like this?

/blah, blah, blah, whatever, just english sentences an whatnot

or simular with just a different character up front. that is just a comment. the interpreter or compiler know to ignore anything after that '/'. it allows you to incorperate documentation directly into the source code, quite handy if you belive in documentation . other characters will tell the interpreter that the following are not programming code but special instruction to the interpreter/compiler. the bottom line is that depending on the language or compiler there are certain control characters that you can't normally use because they mean something specifice to the compiler. you apostrophe most likely is one for xml.

see if you can find a website dealing with xml. maybe you can find the answer there. it is most likely an xml issue rather than a GC3 one.

Unfortunately it doesn't seem to work. I still get all the odd symbols round the < and the '. Speech marks also don't work. The [ and ] symbols do though. Has anyone else tested this?
It's not a major problem, but it's making me curious now.

Edit: I have the answer! In the official tech trees, it's simply an apostrophe symbol used instead of the apostrophe key. Easy...