DO12 - Create Folder Dialog

In the lower left hand corner of the Create Folder dialog is has a numeric counter such as "5 (48)" if I type in a folder name with 5 characters. What's the number in the parenthesis for?

I remember there was a forum thread about this but I can't find it, however I've found there is explanation in the docs:

So the number in parenthesis indicates number of characters of current path + your new folder name that you're typing. For example try to go to C:\ and clear the name field so that it's blank, and it would say 0 (3) because the "C:" part of the path (current location) has the length of three characters.

There's also a tooltip if you hover over the numbers:


Thanks