Feature request: Subdivisions

In an earlier post, someone wanted the feature for subdivisions. I would like to propose something similar.

When I design with PS, I use almost always a baseline overlay — using a pattern. For example a 20px baseline with a 10px subdivision which is about 50% transparant. This is basically having two baselines, but this is very useful for aligning.

I hope this can be a feature. Not sure about the api for this, but this could be something like it:
**/40/** _no subdivision_
**/40-10/** _10px subdivision_
**/24-8/** _8px subdivision_

Or consider the subdivision as an offset:
**/40-10/** _only one extra baseline with an offset of 10px from the main baseline_
**/40-10-20-30/** _three extra baselines 10px apart_

Just my 2c.

~ Jeroen

Start by reviewing the existing baseline overlay implementation and its API or URL syntax; the issue does not name files, tests, or entry points. Compare the proposed subdivision and offset forms, then establish which syntax and visual behavior should be supported. Done means the requested subdivision baselines work consistently with the chosen API.

Written by the indexing model from the issue text.