[BRLTTY] User files on android

[Musicate]

Hello.


I use Brltty on Android. I would like to test the contraction table that 
I edited. I created the Brltty folder on the memory card, and put the 
ru.ctb file which need to be tested in this folder. But even after 
restarting the phone, Brltty does not pick up the table from the my 
Brltty folder that located on the CD card.
What should I fix so that my custom table is used instead of the one 
installed with the application by default?

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Kate