If you don't have installed program for editing PDF documents on your computer, then you can use web application PDFescape which allows you to edit your documents in your browser.
Light leak effects have become quite popular lately, especially on phone apps with photo filters. This time I will show you how to create a simple light leak to a photo from scratch, using Gimp.
At any given time you can reset your Nexus 4 smartphone to the factory default settings, meaning you will bring your phone back to the same state as it was on a day when you took it out of the box.