This template, and other related templates listed below, produce a series of links for a particular page, generally in the form: Name of Page (edit|talk|history|links|watch|logs) though there are variations.

The six links are explained below:
editedit the page;
talk – access its talk page ;
history – access its edit history;
links – access the what links here feature;
watch – add the page to one's watchlist; and
log – access its logs.

The major difference between the templates is the namespace of the page to which it is applied.

Namespace Link to subject page Link to talk page
General {{pagelinks|FULL PAGE NAME}}
Same as for subject page
{{ln|NAMESPACE|PAGE NAME}} {{lnt|NAMESPACE|PAGE NAME}}
Article {{la|ARTICLE}} {{lat|ARTICLE}}
Template {{lt|TEMPLATE}} {{ltt|TEMPLATE}}
Wikipedia {{lw|PAGE}} {{lwt|PAGE}}
Wikipedia:Articles for deletion/ {{lafd|PAGE}}
User {{lu|PAGE}} {{lut|PAGE}}
Category {{lc|PAGE}} {{lct|PAGE}}
File {{lf|FILE}} {{lft|FILE}}
Portal {{lp|PORTAL}} {{lpt|PORTAL}}
MediaWiki {{lm|MESSAGE}} {{lmt|MESSAGE}}
Help {{lh|PAGE}} {{lht|PAGE}}
Book {{lb|BOOK}} {{lbt|BOOK}}


Code Result
{{pagelinks|Category:Stubs}} Template:Pagelinks
{{pagelinks|Category talk:Stubs}} Template:Pagelinks
{{ln|Category|Stubs}} Category:Stubs (edit|talk|history|links|watch|logs)
{{lnt|Category|Stubs}} Template:Lnt
{{la|Article}} Template:La
{{lat|Article}} Template:Lat
{{lt|Tdeprecated}} Template:Tdeprecated (edit|talk|history|links|watch|logs)
{{ltt|Tdeprecated}} Template:Ltt
{{lu|Example}} Template:Lu
{{lut|Example}} Template:Lut
{{lw|About}} Template:Lw
{{lwt|About}} Template:Lwt
{{lc|Stubs}} Template:Lc
{{lct|Stubs}} Template:Lct
{{lf|1944 NormandyLST.jpg}} Template:Lf
{{lft|1944 NormandyLST.jpg}} Template:Lft
{{lp|Television}} Template:Lp
{{lpt|Television}} Template:Lpt
{{lm|Common.css}} Template:Lm
{{lmt|Common.css}} Template:Lmt
{{lb|Business}} Template:Lb
{{lbt|Business}} Template:Lbt

{{subst:ln|Category|Stubs}} results (or resulted) in this code:

{{lx|1=:{{ucfirst:Category}}:|2={{ucfirst:Stubs}}|3=:Category talk|4=talk}}

Note the important colon in 1=:, unnecessary (?) for other Lx namespaces.
Substituting both Lx and Ucfirst finally arrived at (line breaks added manually):

 <span class="plainlinksneverexpand">[[:Category:Stubs]] <tt>(</tt>
 [//new.wikipedia.org/w/index.php?title=%E0%A4%AA%E0%A5%81%E0%A4%9A%E0%A4%83:Stubs&action=edit edit]<tt>|</tt>
 [[:Category talk:Stubs|talk]]<tt>|</tt>
 [//new.wikipedia.org/w/index.php?title=%E0%A4%B5%E0%A4%BF%E0%A4%B6%E0%A5%87%E0%A4%B7:Whatlinkshere/:Category:Stubs&limit=999 links]<tt>|</tt>
 [//new.wikipedia.org/w/index.php?title=%E0%A4%AA%E0%A5%81%E0%A4%9A%E0%A4%83:Stubs&action=history history]<tt>|</tt>
 [//new.wikipedia.org/w/index.php?title=%E0%A4%AA%E0%A5%81%E0%A4%9A%E0%A4%83:Stubs&action=watch watch]<tt>)</tt></span>