There is a new option in the settings in Maestro 5.1: "Check for Undefined Less Variables". I am guessing this is checking CSS Less variables but I am trying to figure out the use case since it shows up when I have my form open. Is this new feature created mostly for template designers? I know form designers can modify/create their own custom Styles but we recommend leaving that in the hands of the template/brand designer.
Just looking to confirm that it is a CSS Less feature and the usecase.
Yes this is a LESS feature that will list any undefined LESS variables which are in shared styles within your form/template and the styles that have them referenced.
Furthermore, these are undefined variables that are referenced in a style but are not setup in the template theme options.