From a page move: This is a redirect from a page that has been moved (renamed). This page was kept as a redirect to avoid breaking links, both internal and external, that may have been made to the old page name.
To a redirect category (rcat) template: This is a redirect from an alias/shortcut (usually), or from a redirect that is the result of a page move/rename, to a redirect category (rcat) template.
From a modification: This is a redirect from a modification of the target's title or a closely related title. For example, the words may be rearranged, or punctuation may be different.
In cases of modification from distinctly longer or shorter names, please use {{R from long name}} or {{R from short name}}, respectively.
If target page is not a template, then use {{R from shortcut}} instead.
Template shortcuts are wikilinked on community pages, talk pages and edit summaries, but not in mainspace articles. Transclusions in mainspace are common and do not need to be "fixed".
Note:Template talk pages are in a talk namespace; they are not in the template namespace. All shortcuts to talk pages should be tagged with {{R from shortcut}}.
When appropriate, protection levels are automatically sensed, described and categorized.