This is a djvu viewer in Lua script.
To install:
1. lgob-iliad-0.1.11 is requred. Find it here:
https://www.mobileread.com/forums/showthread.php?t=36483
2. Unpack the attachment to anywhere and a dir "lua-djview_ddjvu" will emerge. Execute from contetlister.
To use:
Quite simple.
There are four icons on the toolbar: open file, prev page, next page, quit.