maqetta/maqetta — comment on commit 492fc949c9c91fc7d633568ee71c752bf844ba38
File: maqetta.core.client/WebContent/davinci/html/HTMLModel.js line 839
By peller:

It's not specific to 'disabled', but rather a convention for HTML boolean attributes. Since the model doesn't operate on a schema, we have to hard-code the list of attributes which are booleans. Seems consistent with the hard-coding of other HTML rules in this module (e.g. _noFormatElements)