What follows is a formal presentation of the syntax of the WikiText syntax for macro calls, using railroad diagrams. A simpler overview is also available.

espace denotes a sequence of whitespace characters.

The macro's name is a sequence of non-whitespace characters autre que ( or >.

Each individual param-value has the following syntax:

The param-nom is a sequence of letters (A–Z, a–z), digits (0–9), hyphens (-) and underscores (_).

The valeur is specified as follows :