Analyzing Source Code 
Analyzing Source Code
The Debugger contains an extensive range of functions that help you to analyze the source code of a program.
You can step through the source code of a program in four different ways.
For further information, refer to:
For information about functions within the source code display, see:
Displaying the Source CodeThere are also different display modes that provide various information and display the contents of individual fields, tables, and so on:
Processing Fields Processing Internal Tables Displaying Attributes Displaying Objects in ABAP Objects