Template:Deleted template/doc

provides a way to delete templates but still retain them for the purpose of correctly displaying old revisions of pages. When using this method to delete a template, all existing transclusions should be removed in the usual way, and  added into the template being deleted. This should ensure correct display in old revisions, and a warning when used in a revision postdating the deletion.

Current revisions containing templates deleted in this way (as well as the deleted templates themselves) are automatically categorised in Category:Pages containing deleted templates.

Usage
The template takes 3 compulsory parameters:
 * 1) the revision ID of the template at the time of it being deleted. Due to T235957, this parameter is no longer used, and the third parameter (date) is used to decide whether to treat the page like an old revision.
 * 2) template name
 * 3) date the template was deleted

To use this template, add it at the beginning of the template to be deleted, adding the closing brackets of  at the end:

Example:


 * There is also one optional parameter: the  parameter may be used to add further information at the end of the message.

Template documentation
Associated template documentation may be worth retaining, for example for references to alternative templates.


 * 1) Use hat/hab to collapse usage instructions which are no longer relevant
 * 2) Remove any categories (possibly convert them to See Also links)
 * 3) Add a historical template as in this example for expand:
 * 4) If used with Ambox which has the name parameter present for the subst parameter, no must also be passed to Ambox and documentation manually placed at the end of the template code.