Maple Procedures

• Parameters, Local Variables, RETURN, ERROR
• Tracing Procedure Execution: printlevel
• Arrow Operators
• Scope Rules: Parameters, Locals, Globals
• Evaluation Rules: Actual and Formal Parameters, Locals, Globals
• Recurrence Equations and Option Remember
• Types and Map
• Variable Number of Arguments: args and nargs
• Returning Unevaluated
• Simplifications and Transformation Rules
• Optional Arguments and Default Values
• Returning Results Through Parameters