26 Controlling the Flow of Program Execution

• begin: Evaluating a sequence of expressions.
• if cond case: Simple conditional evaluation.
• and or: Conditional evaluation of a sequence.
• while do: Iteration mechanisms.
• Continuations: Continuations.
• Multiple Values: Returning and accepting multiple values.
• Exceptions: Throwing and catching exceptions.
• Error Reporting: Procedures for signaling errors.
• Dynamic Wind: Guarding against non-local entrance/exit.
• Handling Errors: How to handle errors in C code.