How to Exclude File Extentions in the MAZOT Search Engine

Conventions Used
Square brackets "[" or "]" shall be ignored, that is they are not part
of the syntax. Meaning in the file extention exclusion input field you
will only write what is inside the brackets, not the brackets
themselves.

Syntax
For e.g. if you want to exclude the file extention "html" you would write
[.html]  (notice the dot). If you want to exclude multiple file extentions you
have to use the following syntax: Say we want to exclude "html" and
"txt" we will have to write [.html.txt]. You just add the next file extention
next after the previous one, without any space.

The File Extension Exclusion box does support Regular Expressions,
however there should be added that if your goal is only to exclude
file extensions, which I presume is at least one of your wishes; 
since you are reading this, then there is really no need for any 
fancy pattern to match really. Use the syntax above and that
should provide you with the desired result. Further of the nature 
and purpose of this special input field, more, because some RegExp 
features are disabled by configuration. If you wishto use full fledged 
Regular Expressions, then you will want to use theRegular Expression
Search option.

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