PRS-T3 hyphenation - whether you want it or not ?

I just began reading on T3, and compared with T2 it has a new "feature" - it hyphenates at end of many lines in order ot reduce justification.

this is quite disconcerting, though maybe I will get used to it.

I checked the book text & code & it's not being caused by the epub, it something new in the firmware which google sort of confirms.

(it gets a mention here - in the discussions below the video

http://www.makeonlinecollection.com/...ny-PRS-T2.html )

But I cannot see any way to toggle it on/off - is there one

is there any documentation on exactly how it works anywhere ?

update: T3 uses ADE 2 which support hyphenation, I read, So I check & open the same book in ADE 2 on PC & yes, it hyphenates there also. But not in Sony's own reader for PC software.

are Sony unique in forcing this "enhancements" or are there other readers that hyphenate with or without an option to toggle the feature ?