Alright, I'm beginning to learn C++ (as in just started), and something strange keeps happening in Xcode. Those blue markers appear on the side, and when I try to compile the code I get the weird messages displayed in the debugger window. How can I return it to the normal mode? I'm totally new to coding and using Xcode, so please excuse me if this is really easy to fix. OK, I fixed it. Right clicking then deleting the blue markers fixed it. No idea why it happened, but at least it's fixed now.