How does a monk jump as far as they want?

Question

In the Order of the Stick webcomic,

the Monk/Paladin Miko goes mad and tries to rationalize her own bad decisions.

This was back when OOTS still occasionally made jabs at the D&D 3.5 rules. Roy describes her behavior in strip #406 page 2 panel 10 like this:

It's like she has that monk class ability that lets you jump as far as you want, only with her, it applies to conclusions.

What kind of broken D&D build is that a reference to?

I looked on Wikia, but all it mentions is the Slow Fall ability, which lets a monk fall as far as they want, and I suspect there might be more to this reference than that.

Update: I also looked in the thread on the OOTS forum discussing this strip. The only relevant post seems to be by MReav, which claims that this ability was something in D&D 3rd ed.

Answer 1

Lost Jump Mechanics

In the revision to 3.5, several skills were overhauled, Jump among them. Previously the text was:

The maximum distance of any jump is a function of the character's height.

with different proportions depending on whether the jump was standing or running, horizontal or vertical. And the Monk got the ability to ignore this, as:

Leap of the Clouds: At 7th level or higher, a monk's jumping distance (vertical or horizontal) is not limited according to her height.

3.5 dropped the limitation, and of course the Monk no longer needed a class ability dedicated to bypassing it, so that was dropped, too.

Order of the Stick is a 3.5 "edition" comic, but characters have been aware of previous system versions for comedic purposes before.