Input and Output
Output
Use print to write one integer followed by a line break to standard output:
var answer = 42
print(answer)
Matchbox 0.2 does not provide file output or a separate standard error API for programs.
Input
Matchbox 0.2 does not provide an API for programs to read standard input, files, environment variables, or command-line arguments.
Arguments described in Command Line configure the Matchbox executable itself; they are not passed to the running .mb program.