Thanks Bill.
You mentioned that 'Keep in mind that the ClientText.ini contents will override anything you configure in the Branding.plist.' I think you were saying 'the ClientText.ini contents will be overrided anything configured in Brandig.plist', that means the client display string(like the title of login screen) is pending on content of Branding.plist if have, could you please confirm?
I added Branding.plist in Xcode with below content, and it works as below screenshot.
<key>String_6155</key>
<string>Fun with Branded Apps</string>
I use the 'N' = 6155 in instruction to override screen title. so my question is: how can I override the string 'User ID' as 'User Id' in login screen? what number 'N' it should be?