Barangay

page is saved, in the case that the wikitext refers to one or more templates, variabies, of parser functions.

In the case of template substitution the template call is replaced by the template content with subentution of the parameters. Thun a template is used as macro and the page is macro expanded when the page is saved rather than, as ususily happens, when the page is viewed

In the case of substitution of a variable or parser function th reference to it is replaced by the resulting value

Substitution is done by putting the magic word substor

safesubat: after the double opening braces without

Intervening spaces like in the examples:

{{subst: FULLPAGENAME and

sufeaubet: FULLPAGENAME The code entesubet

useful in multilevel substitution, sен below

The result (in the form of the difference with the saved wikitext) can be seen before (or without) saving by pressing "Show changes" However, if the text covers more than one paragraph this diff page is not very suitable for copying the result (e.g. for stepwise substitution without saving every step), because of plus signs in the margin

> Applications

Substitution of a template

• Make a rendered page independent of the template:

The rendered page does not change when the template is edited

The page can be copied to another MediaWiki will without copying the template.

Make page rendering easier and therefore faster for the server.

Analyse and demonstrate the working of templates, However, in some cases substitution works differently

• Make the correspondence between wikitext and rendered page casier to understand (this may apply, the opposite may also apply)

Substitution of a time-dependent variable:

Make a rendered page independent of the time

Substitution of a page-dependent variable

Make a rendered page independent of renaming of the page and of copying the wikitest to another page (the opposite applies if