So when I make custom builds of the various components (NDK, SYS/BIOS, IPC, etc.), specifically where (in what .bld or configuration file) do I set the version string that shows up in the selection dialog box:

Case in point, I need (or want very badly anyway) to maintain two separate builds of the NDK, both based on the same original NDK version, but each slightly customized for the project they will be used in. So, as highlighted above, when I rebuild the 2.20.2.22 NDK, where do I change its version string? Like, to 2.20.2.22.ProjName2 or 2.20.2.22.ProjName2 or whatever.
To be candid, I have hunted through all the files in the NDK's directories the package files, and I can't even immediately figure out where the "2.20.2.22" itself is getting set. (Of course, if I had found it, I probably would not have needed to post this query I suppose. :-) )