What is "TranscriptDirectory" parameter for New-PSSessionConfigurationFile?

CmdLet “New-PssessionConfigurationFile” in intellisense showing that parameter called “TranscriptDirectory” is available, yet get-help is not showing this parameter, also not showing up in online documentation (https://technet.microsoft.com/en-us/library/hh849712.aspx). Specifying this option adds following line to configuration file. What am I missing?

Directory to place session transcripts for this session configuration

TranscriptDirectory = ‘c:’

It’s the directory where you want any transcript files, from that session, written by default.

Yes, I figured it out. Issue is that where do I get this all documentation from? No help available anywhere. This is not the only parameter missing from documentation in that cmdlet. Is it in fact true what I’m seeing - that is cmdlet was updated in new powershell version but helpfile was not (local or online)?

WTH is going with documentation, apparently unless you are French you are not having latest helpfile.
French language documentation has all the parameters (https://technet.microsoft.com/fr-fr/library/hh849712.aspx) but English does not
https://technet.microsoft.com/en-us/library/hh849712.aspx