The individual commands are treated in alphabetical order in the following section. The novice would be well-served by reading the treatments of the data, model, newpar, and fit commands, in that order, then the other commands as needed. The write-up for each command includes a brief description of the purpose, an outline of the correct syntax, a more detailed discussion of the command assumptions and purpose, and a series of examples. Some commands have one or more subcommands that are similarly described following the command.
In the command description, the syntax uses the following conventions. <arg> is an argument to the command. <arg c> =:: <arg a> <arg b> defines <arg c> as <arg a> followed by <arg b>. <an argument>... is a repeated string of arguments of the same type. [<an argument>] is an optional argument. {<arg a> | <arg b>} indicates a choice between an argument of type <arg a> or <arg b>.