Template:Rev/doc

{	"description": "This template can be used to link to a specific SVN revision.", "format": "inline", "params": { "1": {			"label": "revision", "description": "The SVN revision number, or “?” if unknown. “?” categorizes the page to “Pages with a wanted revision number”", "example": "1234", "type": "line", "required": true },		"2": {			"label": "link text", "description": "Text of the revision link. Not used if the revision number is “?”", "type": "line", "default": "r, e.g. r1234" }	} }

Usage
or  (categorizes into ) and and