Template:Delete/doc

Parameters
{	"params": { "1": {			"label": "Reason", "type": "string", "description": "The reason this article is being nominated for deletion", "required": true },		"unmask": { "type": "boolean", "label": "Category mask", "description": "If set to any value, category masking is disabled", "example": "yes" }	},	"description": "Use this template to mark a page as a candidate for deletion. Adding this to an article automatically adds it to Category:Deletion candidate.", "format": "inline" }

Category masking is used to prevent this template, its documentation, and its testcases, from accidentally being listed for deletion. As currently implemented, this means that no template marked for deletion is listed in Category:Deletion candidate. In order to properly list a template page for deletion, use the parameter, as shown below.

Usage
See the template's testcases: