This chapter contains an alphabetically ordered list of all of PyXPlot’s commands. The syntax of each is specified in a variant of Backus-Naur notation, in which angle brackets <> are used to indicate replaceable tokens, parentheses () are used to indicate mutually-exclusive options which are separated by vertical lines |, square brackets [] are used to indicate optional items, and braces {} are used to indicate items which may be repeated. Dots ... are used to indicate arbitrary strings of text. Where any of these punctuation marks appear as a part of PyXPlot’s syntax, they are placed in double quotes, as in "{". Strings, such as filenames, which should be placed in quotes are shown in single quotes, as in ’<filename>’, though in practice, double and single quotes can always be used interchangeably. In cases where there is likely to be any ambiguity, worked examples are usually shown beneath the syntax specification.