ꯋꯤꯀꯤꯄꯦꯗꯤꯌꯥ:Substitution

The "subst:" keyword (short for "substitution") is used as a prefix inside template code. It changes the way the software expands the template. Ordinarily, a template will be expanded "on the fly"; that is, every time you edit a page where the template is used, the template calls a separate page for the text, and the text it shows is updated. Placing "subst:" inside the template code when using it on a page, tells the software to substitute the template with text of the template (that is, the text that is on the template's article page when the template is added to the page), so the output of the template is saved when you save the page, and it does not change even if the template is edited.