Hello,
- pdf reflow : It's working without loosing the other options.You can make zooms, anotations, etc.
But for the file that I'm testing, you can loose the tabular : you have the data but not the picture of the tabular with the lines for the rows or columns.
- multitasking : Yes with a patch. You can have 4 tasks + 1 explorer opened.
- search for filename : M92 is a Linux device, you can search for a file name containing a word. The books can by displayed using their filename or using the metatada. You can use directories to order yours files.
- search in a book : You can search a word in a book.
- Wifi : Yes, but I'm not a big user of Wifi.
- M92 + Calibre : Yes, no problem.
- Open software : a big part of the code is given. Some users have written some applications. Look on the forum :
https://www.mobileread.com/forums/forumdisplay.php?f=220
- Dictionary : Stardict dictionary. I'm not a user of the dictionary.
If you want more, ask for it
I can make pictures of my M92 with your files for test.