JToolbarHelper::help

Writes a preview button for a given option (opens a popup window).

Signature

public function help(string
        $ref,
            [bool
        $com = false,
            [string
        $override = null,
            [string
        $component = null]]] )

Parameters

$ref: The name of the popup file (excluding the file extension for an xml file).
$com: Use the help file in the component directory.
$override: Use this URL instead of any other
$component: Name of component to get Help (null for current component)

Returns

void