The command line can be found at the very bottom of the screen. This is a guide on how to usee each command. When do command has been selected it reads:
Then for each command there will be a series of instructions to help complete the function. For example when the Wall command is selected the Command Line will read “Give Start Point”:
Once the first point of the wall has been drawn the Command Line will read:
If unsure on how to complete a feature of the programme always look to the Command Line at the bottom of the screen.