Xcode Debugger: What does the blue italic text mean?

Question

Here\'s a screenshot:

Clearly it indicates that the x coordinate of m

Answer 1

The blue italic text means that the value of that variable (or expression) has changed since the last time the program paused.

“L” in the green square means that c is a local variable. “A” in a purple square means a function or method argument (e.g. you will see this next to self). “V” in a green square means some other type of variable, like an instance variable or a global variable. There may be others but I don't remember them.