2.1 Command 2.2 Data 2.3 Coordinates and Overlays 2. Entering one of these keywords will print a short summary for each command in that group.
General help is available by calling the help command with no arguments.
Ctrl-D exits help. Each command has associated with it qualifiers and positional parameters. The name of qualifiers can be abbreviated provided that the abbreviation is unique. Positional parameters follow the qualifiers and are typically used to specify a required parameter e.g. command pos1 . The commands are executed in sequence from left to right.