AirTran Airways has a code sharing agreement with Southwest Airlines. Previously, it had a code sharing agreement with Sky West Airlines. AirTran Airways entered into the code sharing agreement with Southwest Airlines on February 14, 2013.

There is no father. It was just people sharing bit and pieces of code.

To help make the code more readable / understandable. It helps when sharing the code so someone can see whats going on.

omg ok you run away jk try to find something like a password or some sort of code to unlock the screen sharing program

develops by sharing increasing amounts of code between products like word and excel