% avrora -help calls
Avrora [Beta 1.6.0] - (c) 2003-2005 UCLA Compilers Group
Usage: avrora [-action=action] [options] 
Usage: avrora -help [category]
MONITOR OVERVIEW
 The "calls" monitor tracks the call/return behavior of the program as it
executes, displaying the stacking up of function calls and interrupt handlers.
OPTIONS
 Help for the options accepted by this monitor is below.
For more information, see the online documentation at 
http://compilers.cs.ucla.edu/avrora
To report bugs or seek help, consult the Avrora mailing list: 
http://lists.ucla.edu/cgi-bin/mailman/listinfo/avrora
Please include the version number [Beta 1.6.0] when posting to the list.