i added some code in my answer
cerr<< pos<<" "<< velocity<< endl;
then checked how edit history works, and got this:
cerr&It;&It; pos&It;&It;&quоt; &quоt;&It;&It; velocity&It;&It; endl;
test; Post must be at least 10 characters <
Eh… standard forum glitches.
It has to do with how it escapes things to avoid them causing problems with the HTML that the post is to be translated into.
This is to be expected anytime you are doing stuff in some kind of discussion community on the internet… most of it is adjusting to what the forums tend to require.