This build of Steel OS 1.2 (yes, builds of it exist , but I never shared them so they're hard-to-find and not-well-documented ≥ _ ≤) is mostly the same as Steel OS 1.20 was in the final version, except it was in the midst of the transition from 1.00 to 1.20 (1.01 and 1.10 wouldn't come until later). For reference, Steel OS 1.2 (also known as Steel OS 1.20 officially) was a version of Steel OS 1.0 (aka Steel OS 1.00 officially) that overhauled the UI to be more in-line with later versions, such as 1.73, 2.00, 2.30, 2.51, 3.00, and 3.10 (as well as the cancelled 1.51, but we don't talk about those builds). It continues to be a part of the mainstream Steel OS support, and as such, is subject to feature updates.
Created entirely myself. I talked more about why I released this ancient build (among a variety of others) with my releases of 1.00 Build 21 and 1.00 Build 144.