Originally Posted by diba
BUT I can NOT confirm, that SYM popup does not work, I have my personalized SYM layout with the german Umlaute and my preferred sorting ... as with 3.3
I meant the ALT-SYM popup, not the usual SYM popup. The SYM popup is too small to contain the symbols and all non-ascii characters for some languages.
Kindle has a built-in ability to display advanced symbol popup dialog with another set of characters on several pages launched by ALT-SYM shortcut. But this feature is disabled by default.
keybru hack used bytecode injection to enable this ALT-SYM popup and to redefine the character selection. This is not possible any more.