# STAMP - Communications and program flow

- Communications

  Command | Description
  --- | ---
  SERIN | Reads communication bytes into a variable or a series or variables
  SEROUT | Transmits a variable or constant, or series of variables and constants

- Program flow

  Command | Description
  --- | ---
  IF.... THEN | Test an input and jump to label
  GOTO | Jump to address label
  END | End the main program

  Conventions: labels at the beginning of lines are followed by a colon ( : ).

## See also:

- BASIC (STAMP) commands