My visit to Istanbul at the end of April 2016 also had to do with enabling annotations. Not in the brain but on the web.

Within each content area, there are one or more tutorials. Each tutorial consists of lessons. Each lesson should be a page detailing the concept being taught, along with sample code. Lesson and page ...

The goal of this project is to provide simple, portable and compatible code (data encrypted in Python can be decrypted in PHP, and so on). The encryption algorithm used is AES in CBC and CFB mode.