?????? (Substitution) ?? ???? ??? ???? ???? ?? ???? ???? ?? ?????? ???? ???? ?? ??????? ?? ????? ???? (??? ????) ???? ?? ??? ??? ? ????? ?? ???? ?? ?????? ?????? ????? (???) ??? ????? ??? ?? ????? ??? ????? ???. ??? ??? ??? ?????? ?? ???? ?? ?????? ??? ??? ?? ????? ?? ????? ??? ????? ???. ??? ?? ??? ?? ???? ???? ???? ?? ???? ????? ?? ????? ??? ????? ???? ?? ?? ???? ?? ?? ?? ????? ??? ??? ????? ? ??? ? ????? ??????? ??? ????? ????? ???????? (???? ???? ??? ?? ???? ?? ????? ? ????? ???)

Substitution is a function whereby, when an editor saves a page, an item in the wikicode is permanently replaced with its current value. In particular, a template can be substituted, as an alternative to transclusion. The difference is that when a template is substituted on a page, its appearance on that page will no longer be affected by later changes made to the template itself (as is the case in a transcluded template).

????? ??? ????? ?? ??? ??? ?? ??? ????? ????? ?? ?????? ?? ?? ????? ????? ???. ??? ??? ?? ? ????? ???? ??? ????? ??? ? ???? ?? ???? ??? ?? ?????? ??????? ????? ?? ??? ? ?? ??? ???? ?? ?? ??????? ???? ??? ? ??? ?????? ?? ???? ?? ??? ??? ???? ????? ???? ??? ???????? ??? ???? ????? ???? ??????? ??? ????? ???. ???? ????? ? ???? ????? ????? ?????? ???. ?? ?? ???? ??? ?? ?????? ??????? ????? ????? ? ??? ???? ???? ??????? ???? ? ??? ?? ????? ? ? ????? ?? ????? ???? ????????? ?????. ???? ???????? ?? ????? ?????? ????? ??? ? ???? ?? ???? ??? ????? ????????? ??? ?????.

Substitution is a different way of handling templates than normally done on Wikipedia. Usually, templates are transcluded, which means that if the template changes, every page that uses it will update to comply with the change-in-question. This is the procedure used for most templates. However, some templates are instead substituted. This means that if the template changes, the page that uses it will not, and will continue to show the old version of the template. Some templates should always be substituted, while most should always be transcluded.