Program Files paths on 32-bit vs. 64-bit Windows

Hi, just trying to figure out how the TrueUpdate "programfilesfolder" global and session variables would resolve on different Windows systems. Sorry if this is a noob question, but I couldn't find any definitive answers on it.

Obviously on 32-bit Windows, the only valid variables are "_ProgramFilesFolder" and %ProgramFilesFolder%, which I assume resolve to "C:\Program Files"?

But on 64-bit Windows, we have "C:\Program Files" where 64-bit applications are installed, and we have "C:\Program Files (x86)" where 32-bit applications are installed. I noticed there is an undocumented session variable %ProgramFilesFolder64%, which I'm guessing resolves to "C:\Program Files" on 64-bit Windows? So then, does %ProgramFilesFolder% resolve to "C:\Program Files (x86)" on 64-bit Windows?

So basically, in the table below, are the TrueUpdate global and session variables correct? And what (if any) are the missing values?
References:

TrueUpdate global variables: https://www.indigorose.com/webhelp/t..._Variables.htm
TrueUpdate session variables: https://www.indigorose.com/webhelp/t..._Variables.htm
Windows environment variables: https://ss64.com/nt/syntax-64bit.html - section "File location environment variables"

Thanks in advance!