Template:Rellink/doc

{	"params": { "1": {			"label": "Content", "type": "content", "required": true, "suggested": true, "description": "The content to be displayed in the section note", "example": "Insert text here." },		"extraclasses": { "label": "Extra classes", "description": "Comma-separated list of CSS class names", "type": "string" }	},	"description": "This meta-template is used to style notes about a section, in order to direct users to related pages.", "format": "inline" }

Example
produces

Adding an  parameter allows extra CSS classes to be specified.