Fresh noob looking to slightly edit an existing app

Great! Just to add:

pretokenization is effectively an Espruino-specific minification. It removes whitespace, and any 'tokens', like this, for, while/etc are converted to a single number. It's faster for Espruino to parse and takes up less space, but if you want to see the code you haven to get the IDE to convert it (and even then the formatting is gone so it's harder to understand)