The <<revision>> macros provide a good deal of expressive power, though their potential uses may not be immediately obvious. Here are a few examples which may provide some inspiration.

An extended form of <<cyclinglink>>

This combination of <<cycle>> and <<set>> changes a variable every time you cycle the passage using the link.

<<cycle attire>>
<<set $shirt="red">>[<img[redshirt.png]] You eagerly slip on a red shirt.
<<becomes>>
<<set $shirt="blue">>[<img[blueshirt.png]] No! Clearly, a blue shirt is required.
<<becomes>>
<<set $shirt="vermillion">>[<img[yellowshirt.png]] Nope, it ''has'' to be vermillion! Or so you think...
<<endcycle>>
<<revise attire "Reconsider shirt">>

A music picker

This uses my HTML5 sound macros to create a link that changes the currently playing music when you click it. (If the music isn't meant to loop, of course substitute <<loopsound>> with <<playsound>>)

<<cycle music>>
<<stopallsound>><<loopsound "piano.ogg">>Piano music
<<becomes>>
<<stopallsound>><<loopsound "chiptune.ogg">>Chiptune music
<<becomes>>
<<stopallsound>><<loopsound "acapella.ogg">>A capella music
<<endcycle>>
<<revise music "Change current music">>

More info / Less info

This functions similar to <<replace>> but also provides a link to hide the inserted text after it's been shown.

<<revision info>>You see here a spotted stripe frog.<<revise info "(More info)">><<gains>>
Poisonous in 3 countries and illegal contraband in 7, this fearsomely shaded amphibian is an aesthetic and biological terror.
<<revert info "(Less info)">>
<<endrevision>>