This template is used for transcluding various pages (from "Page" namespace) from other Wkisource domains:

Code:

{{iwpages|language code|Title of the Index page|page_from|page_to|section_from|section_to|section_only}}

Note: section_from and section_to are not optional since March 2016.

And this will do the following at the end Wikisource:

<pages index="Title of the Index page" from=page_from to=page_to fromsection=section_from tosection=section_to />

If you specify section_only, it will discard both section_from and section_to, and it will translate to:

<pages index="Title of the Index page" onlysection=section_only />