Introduction

This tiddler describes the different ways in which Procedures can be defined.

Procedure Definition Pragma

Procedures are created using the Pragma: \procedure at the start of a tiddler. The definitions are available in the rest of the tiddler that defines them, plus any tiddlers that it transcludes.

\procedure my-procedure(param)
This is the procedure text (param=<<param>>)
\end

Note that the Pragma: \whitespace setting is inherited from the parsing context in which the procedure definition occurs. That means that a tiddler containing multiple procedure definitions only needs a single whitespace pragma at the top of the tiddler, and the setting will be automatically inherited by the procedure definitions without needing the pragma to be repeated.

Procedure Definition with Set Widget

Procedures are implemented as a special kind of variable and so internally are actually defined with a $set widget.

<$set name="my-procedure" value="This is the procedure text">
...
</$set>

Importing Procedure Definitions

The Pragma: \import or $importvariables widget can be used to copy procedure definitions from another tiddler.

$:/tags/Global Tag

Global procedures can be defined using the SystemTag: $:/tags/Global.

The tag SystemTag: $:/tags/Global/View is used to define procedures that should only be available within the main view template and the preview panel.

The tag SystemTag: $:/tags/Global/View/Body is used to define procedures that should only be available within the main view template body and the preview panel.