input|class_icon( [ size, [, alt_text ] ] )
This operator generates an image tag that references a class icon. The name of the icon must be provided using the input parameter. The "size" and "alt_text" parameters are optional (see the description above). The operator uses the settings provided by the "icon.ini" configuration file (or an override).
{'folder'|class_icon( 'small', 'Alternative image text' )}
The following output will be produced: