With the exception of alttext, the named parameters are toggles that are either omitted (default in most cases) or activated (by being assigned a value such as "on", "yes", "true", "include", etc.). They may be included in any order (see Examples below). Certain templates have the parameter "on" by default; see the main table for all alternate options.
This template can take any number of unnamed parameters as parameters accompanying the template link (or name); see Examples below.
On the source sister projects, en.wikipedia and Meta, X0, X1, X2, …, X9 are sandbox templates for experimentation on involved templates that need be in template space. An auto-cleansing software facility exists that might be used to duplicate the facility on other Sister projects.