Edited the text, primarily in the debugging section, to make the progression more self-evident. Added one more example of casting. Removed couple of sentences about functions interfering at the end of call stack section because they were confusing and not expanded upon later in the text.
Edited the text, primarily in the debugging section, to make the progression more self-evident. Added one more example of casting. Removed couple of sentences about functions interfering at the end of call stack section because they were confusing and not expanded upon later in the text.