The following documentation is transcluded from Template:For2/doc:

Description
Template for adding disambiguation notes to articles.
Syntax
{{for2|<redirect topic>|<other use>|<link suffix>}}
Sample output
{{for2|Some topic|some other topic|different}} produces: 'Some topic' redirects here. For some other topic, see Some topic (different).
Acknowledgements
Adapted from a similar template on Wikipedia. (Not the same syntax!)