Options in the sample compiler

@c+	listcode
@a+	show parser actions
@p+	show parse stack repeatedly
@t+	show tokens when recognized
@o+	turn optimized code generation on
@d+	show the semantic stack once
@s+	dump the symbol table once
@m+	show messages

In the skeleton compiler you have all but m.
Option o does nothing in the skeleton compiler.

These may be combined (only in sample compiler) as in 
@c+t+

They are turned off using a - rather than a +

@c-t-

Therefore they may be used to document 
a portion of a program

For all listings turned in to the instructor,
you should use @c+ and only @c+. 

Note that the sample compiler runner.exe requires
the file tables to be in the same directory. It reads
from standard input and writes its listing to
standard output, so you usually run it with:
runner <test0 >list0
 