R.1.t3.-----------------3----------.rbxl |work|

Potentially stands for Release 1, Test 3 or Revision 1, Tier 3 , indicating this was a specific iteration of a larger project.

In the early 2010s, several "auto-save" and "versioning" plugins existed. Some of these used algorithmic naming to prevent overwriting previous saves. It is possible that is the product of a poorly coded auto-saver. R.1.T3.-----------------3----------.rbxl

Writing .rbxm files - Scripting Support - Developer Forum | Roblox Potentially stands for Release 1, Test 3 or

Look for these patterns inside the hex dump: Potentially stands for Release 1

The heavy use of dashes is a common tactic in file sharing to bypass certain automated filters or to create a "placeholder" visual in folders.