## 2.1 Command Summary

`*`
  Comment line.
`!`
  Pass a command to the operating system.
`<`
  Batch mode.
`>`
  Direct the “standard output” to a file.
`AC`
  Performs a small signal AC (frequency domain) analysis. Sweeps frequency.
`ALARM`
  Select points in circuit check against limits.
`ALTER`
  Perform analyses in queue. Changes follow. (Not implemented.)
`BUILD`
  Build a new circuit or change an existing one.
`CHDIR`
  Change current directory.
`CLEAR`
  Delete the entire circuit, titles, etc.
`DC`
  Performs a nonlinear DC analysis, for determining transfer characteristics. Sweeps DC input or component values.
`DELETE`
  Delete a part, or group of parts.
`DISTO`
  SPICE command not implemented.
`EDIT`
  Edit the circuit description using your editor.
`END`
  Perform analyses in queue. New circuit follows. (Implemented incorrectly.)
`EXIT`
  Exits the program. (Same as quit.)
`FANOUT`
  List by node number, the branches that connect to each node.
`FAULT`
  Temporarily change a component.
`FOURIER`
  Transient analysis, with results in frequency domain. (Different from SPICE.)
`GENERATOR`
  View and set the transient analysis function generator.
`GET`
  Get a circuit from a disk file. Deletes old one first.
`IC`
  Set transient analysis initial conditions. (Not implemented.)
`INCLUDE`
  Include a file from disk. Add it the what is already in memory.
`INSERT`
  Insert a node number. (Make a gap.)
`LIST`
  List the circuit on the console.
`LOG`
  Save a record of commands.
`MARK`
  Mark this time point, so transient analysis will restart here.
`MERGE`
  Get a file from disk. Add it the what is already in memory.
`MODIFY`
  Change a value, node, etc. For very simple changes.
`NODESET`
  Preset node voltages, to assist convergence. (Not implemented.)
`NOISE`
  SPICE command not implemented.
`OP`
  Performs a nonlinear DC analysis, for determining quiescent operating conditions. Sweeps temperature.
`OPTIONS`
  View and set system options. (Same as set.)
`PAUSE`
  Wait for key hit, while in batch mode.
`PLOT`
  Select points in circuit (and their range) to plot.
`PRINT`
  Select which points in the circuit to print as table.
`QUIT`
  Exits the program. (Same as exit.)
`SAVE`
  Save the circuit in a file.
`SENS`
  SPICE command not implemented.
`STATUS`
  Display resource usage, etc.
`SWEEP`
  Sweep a component. (Loop function.)
`TEMP`
  SPICE command not implemented.
`TF`
  SPICE command not implemented.
`TITLE`
  View and create the heading line for printouts and files.
`TRANSIENT`
  Performs a nonlinear transient (time domain) analysis. Sweeps time.
`UNFAULT`
  Undo faults.
`UNMARK`
  Undo mark. Release transient start point.
`WIDTH`
  Set output width.