Another option would be the Renderly script. This script uses markers to define render regions so you can easily customise which sections of your comp to send to the render queue!

I know this is an old thread but I had this requirement recently & spent a while looking for a solution.

In the end I made this script that turns composition markers into render sections so you can easily render out different sections of the same comp.

There’s now a free script that will create an equilateral triangle in After Effects for you!

With the new Javascript engine in AE you can now do the following:

First add an angle control to your text layer, then add the following expression to your sourcetext value:

var num = parseFloat(effect("Angle Control")("Angle")); num.toLocaleString("en-GB");

The .toLocaleString option also comes with some other options like percentage signs and…

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In the latest version of After Effects you can do the following:

Apply an angle control to a text layer (sliders are limited to 1 million) and then add the following expression to the source text:

var num = parseFloat(effect("Angle Control")("Angle")); 
num.toLocaleString("en-GB");

I’ve also written a blog post with more information on how to create a…

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The Telegram Script from Loop does exactly this, it splits paragraph text into lines and adds an optional background and matte for each line.