Feature summary (what you would like to be able to do and where):

In special:prefixindex need to toggle the namespace prefix on and off in the displayed page list

In this example from English Wikisource the generated list would allow a presentation form that prepends the namespace to the generated list, eg. Page: ns

https://en.wikisource.org/wiki/Special:PrefixIndex/Page:Houghton_Mifflin

Houghton Mifflin Co. v. Stackpole Sons (104 F.2d 306).pdf/1
Houghton Mifflin Co. v. Stackpole Sons (104 F.2d 306).pdf/2
Houghton Mifflin Co. v. Stackpole Sons (104 F.2d 306).pdf/3
etc.

desired output

Page:Houghton Mifflin Co. v. Stackpole Sons (104 F.2d 306).pdf/1
Page:Houghton Mifflin Co. v. Stackpole Sons (104 F.2d 306).pdf/2
Page:Houghton Mifflin Co. v. Stackpole Sons (104 F.2d 306).pdf/3`
etc.

From my dim dark memory this sort of display used to be available though has disappeared with other iterations

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):

I want to be able to easily generate a list of pages for maintenance purposes including the namespace name, and to have that ability to toggle on and off that display component

PrefixIndex only displays as

• {{{PAGENAME}}

desire the ability for additional option

• {{NS}}:{{PAGENAME}}

The addition of another toggle option would be my wish

Benefits (why should this be implemented?):

The Wikisources have Page: ns pages that align with the File: and Index: ns version file of the same name, and moves of these files/pages generates large amounts of redirects and other type of maintenance, and this the best source to generate a clean list.

At the moment for a book with 500 pages, that means that I have to add the prefix to 500 lines from a system generated list ¯\_(ツ)_/¯