3 This layout is data-driven: I installed [WhatPulse](https://whatpulse.org/) a few months ago and generated a heatmap of the most frequently used keys. I also optimized for my most-used programming languages, and muscle memory.
5 ## Changes from Default
10 - rearrange arrows in original layout
11 - swap rshift and Enter
12 - map / to original location of left arrow key
16 - move backslash to backspace
17 - map quote to original location from qwerty layer
18 - map brightness up / down to original location of left and up arrows
19 - map volume up / down to original location of down and right arrows
23 - move pipe to backspace
24 - map quote to original location from qwerty layer
25 - map brightness up / down to original location of left and up arrows
26 - map volume up / down to original location of down and right arrows
30 - map to esc key: screenshot region to clipboard - an alias for ctrl + cmd + shift + 4
35 - Illuminate when pressing RAISE, LOWER, or ADJUST ([source](https://www.reddit.com/r/olkb/comments/8wvk8s/custom_rgb_configuration_by_keycodelayer/))