CommandLine$

This special variable contains any switches that were added when Just BASIC was started.  This is especially useful in applications executing under the runtime engine.  It allows a tokenized program to receive information upon startup and act upon that information.  The CommandLine$ variable can be parsed in the same way as other strings to retrieve the information.  One way to extract information from the CommandLine$ is with INSTR().  The WORD$() and VAL() functions can also be used to evaluate the contents of CommandLine$.