How to use szExclusionFilter?

[aml]

In https://www.zabkat.com/changes.txt you state,

* [P] A registry setting (szExclusionFilter) defines a global exclusion filter for views and tree, hiding matching files and folders. It is a layout-specific setting, defined as a comma separated list of wildcards to EXCLUDE from view (alternatively it can be a saved hyperfilter name as those in FIND FILES dialog). When active, the hidden files statusbar icon will show as a reminder. Only relatively fast file properties can be used in the exclusion filter.

In https://www.zabkat.com/blog/xplorer2-v4 ... filter.htm you state,

A new registry tweak called szExclusionFilter sets a global exclusion filter, extending the hidden file attribute to other files and folders.

There is also a video, but which does not treat this matter.

I know how to alter the Windows registry, but where and how would I use that szExclusionFilter key there, could you please give the parent key of the key szExclusionFilter, and the value of the key, let's say I want to exclude/hide

a) just the file extension .abc
b) two such extensions, .abc and .def

(I know I can also, manually, put -.abc into the Filter field, every time I run the program, but doing it by default would be so much better indeed.)

Thank you!

[nikos]

you don't need to edit the registry, just use TOOLS > ADVANCED SETTINGS menu command and enter your comma separated list of wildcards as such

http://1drv.ms/u/s!ArTl8freK0gtki392xqL2-5iVT3X

for more complicated filters, define a "search rule" e.g. with CTRL+F dialog, save it with a name, then supply this name in the above highlighted box

[aml]

This works fine and both with .abc and *.abc, as in your screenshot. It's very useful to hide backup files which some programs write into the same folder for example.

Thank you very much!

[nikos]

just keep in mind that this filter cannot be disabled, unless you use another layout that doesn't have a background filter