What and Why is the "M" in URML?

[slowrunner]

The Manifesto declares what URML is and is not, and begins with the title: "URML: UNIVERSAL ROBOT LANGUAGE"

Obviously overloading "URL" for "Universal Robot Language" would be confusing. Somehow in my brain "ML" maps to "Machine Language" - a lowest level language native to the specific machine such as 6502 Assembler or 8080 Assembler were once the machine languages I was tasked to program in.

Thus "URML" could be "Universal Robot Machine Language" or "Universal Robot [Machine] Language" to allow for the optional word?

Perhaps I am obsessively pedantic, but "URML: UNIVERSAL ROBOT LANGUAGE" is causing semantic dissonance for me.