Introduction

Exception functions include the following:

• pause: Pauses program execution. User can choose whether to continue or stop running
• stop: Progam execution stops entirely
• end: Current program ends. If called by a superior program, then the superior program continues running.
• exit: Exit program execution
• abort: Exit program execution
• throw: Skips following code until catch or catch if is encountered. Values thrown are referred as frisbees.
• catch: Arrival point for frisbees thrown. Execution continues here with the values picked up
• catch if : The frisbee will only be caught if the value matches with the condition expression specified. Otherwise the frisbee keeps flying.
• interactive: Enters interactive mode so you can inspect variables, tables, and do other works interactively. Type return to continue program execution.
  
• null: Null function. Does nothing, returns void value. Suitable as placeholder function calls.