Astute observers will notice that there are now two links in the menu bar that reference something called Fre-MOn30 — a mail list at Yahoo!Groups and a web site.
Fre-MOn30 is an outgrowth of several initiatives for an On30 Module Standard, including OCMODS. The unique thing about the Fre-MOn30 is that it provides a standardized way to build non-standard modules. In other words, generally speaking, the standard is more about the module interface than anything else (although certain stipulations are placed on the mainline, to provide allow for the greatest compatibility with the widest array of locos and rolling stock).
The Mid-Atlantic modules are compatible with Fre-MOn30, at least at the interface level.