Or does the original remain forever ?  I notice that online help is for build 21.12.0 whereas my local help is 21.10.0.
 
Will there be at least periodic updates to the local help ?  I prefer the local help's interface, and I'm not always able to be online.
 

The local help has been updated with every release. It is a separate download from the core.

 
So it is.  Thank you Steve.
 
Interestingly, the installer "SONARHelp_Documentation_1.0.0.23.exe"   is 556 MB big, but only contains :
 
Sonar.chm  62mb
SONAR Reference Guide.pdf  41mb
SONAR User Guide.pdf  3mb
Command Center uninstall info  1mb
 
At least that's all it installed.  What might be the remaining 400+ mb in this installer ?
 

Same files in different languages

 
Ahh...  That makes sense, sort of.
Thanks.
 

CW could save us all some bandwidth if the local help installers were broken out into language  specific versions and the Command Center was smart enough to use its language setting to pick the appropriate installer. I guess it is time for a feature request.