katarakt - 0.2-4+b2 main

It's a PDF viewer. It views PDFs.
.
There are currently two layouts. The presentation layout is very
simple and only supports scrolling on a per page basis. As the name
suggests the current page is displayed in the center and zoomed to
fit the window. It is active by default.
.
The grid layout is much more advanced and offers continuous (smooth,
per pixel) scrolling, zooming and adjusting the column count. Pages
keep their correct relative size and are shown in a grid.