Thank you for your explanation, but this is not exactly what I wanted to know. Actually, I have developed my own approach and I am aware of how to change specific characters (for non English language letters) - so there is no problem in regards of this, but methods of the Mp3Tag program are not useful to change folder (_DIRECTORY) and relevant subfolder names by one take.
There is a simplified example:
My start filename is "Aaa - Bbb _ Aaa Ccc.flac",
artist name: "Aaa", title: "Bbb", album: "Aaa Ccc".
If I use the mask: "D:\Music\%artist%\%album%\%artist% - %title% _ %album%" - the address generated by program Mp3Tag is "D:\Music\Aaa\Aaa Ccc", that means: the result is
"D:\Music\Aaa\Aaa Ccc\Aaa - Bbb _ Aaa Ccc.flac"
("Action > Format value "_FILENAME": D:\Music\%artist%\%album%\%artist% - %title% _ %album%")
If I have mistaken and initially have written incorrect word (Aaa instead of Hhh) and try to use Action > Replace "_DIRECTORY": "Aaa" -> "Hhh":
From the path:
"D:\Music<b>Aaa<b>Aaa Ccc\Aaa - Bbb _ Aaa Ccc.flac"
I have got the result:
"D:\Music<b>Aaa<b>Hhh Ccc\Aaa - Bbb _ Aaa Ccc.flac" - that means - only the last folder name is changes, but I need full path folder names to be changed as
"D:\Music<b>Hhh<b>Hhh Ccc\Aaa - Bbb _ Aaa Ccc.flac"
If there is path like
"D:\Music<b>Aaa<b>Aaa Ccc<b>CD 3\Aaa - Bbb _ Aaa Ccc.flac", by making changes, I get the same
"D:\Music<b>Aaa<b>Aaa Ccc<b>CD 3\Aaa - Bbb _ Aaa Ccc.flac"!!
What I need is the solution of how to change (create a new) file folder and sub folders names by one take, using Action > Format_value "_FILENAME" - the main objective what I need to get is to replace non English language characters (initially taken from file Tags) in file folder and sub folders names (I need file and folder names without non English language characters) by one take. Leaving without changing tags - with non English language characters!
Or if necessary, by providing prior notification of folders which name should be changed.