Count of files in folder and all sub-folders

I am being very stupid I suspect but I cannot find a way of display in (all) lister panes, the total number of files in a folder including those in all sub-folders. File count seems to display the number of files in the associated folder but not those in all sub-folders as a total. Can anyone set me right please?

There is a Total File Count column you can use which will show how many files are in each sub-folder (including in their children). Adding this will cause Opus to have to read the directory listing for every folder below where you are currently, so you would not normally want to do it all the time; only when you want the information.

The status bar does not have anything similar, since showing that information in the status bar would mean Opus was always reading every directory listing below the folder you were in, which would be undesirable. (e.g. If you went to C:\ it would end up reading the listings for your entire C:\ drive.)