If you're copying from specs where the BA has the replace hyphens with dash setting selected in Microsoft Word (which is checked by default), then be careful if you copy that generated dash character into your .master page file. I've found today when you hit save on the – (Alt + 0150 in notepad) character in a .master page file your devenv.exe process is thrown into an infinite loop and will max out your CPU!
Same happens if you try and open a .master page file that another developer has checked in with this character inside it.

