There are two forms of program execution under CodeView:
Continuous; the program executes until either a previously specified breakpoint has been reached or the program terminates.
Single-step; the program pauses after each line of code has been executed.
Sections 15.4.1 and 15.4.2 explain how each form of execution works and the most effective way to use each.
As you are debugging, you can display the program in source-code form or assembly form. Section 15.4.3 explains the advantages of each.