4 Commands
This chapter describes all of the simulator's interactive commands. 
Commands are organized into the following categories:
     
- ‘builtin’
 - Built-in interpreter commands
 - ‘general’
 - General-purpose commands
 - ‘info’
 - Information about the simulation state
 - ‘modes’
 - Simulator execution modes
 - ‘simulation’
 - Breakpoints and step control
 - ‘tracing’
 - Checkpointing and tracing
 - ‘view’
 - Simulation state monitoring and feedback