Looking for an expert who has experience on minix3 operating system.

I need help with my Masters assignment on Minix3 operating system. I want an expert who has experience with Minix3 operating system coding. I am running Minix version 3.4 on virtual box.

For this assignment, you will be working with device drivers. Locate a source code in MINIX that can handle a driver that controls the terminal.
Modify the terminal driver so that, in addition to a having a special key to erase the previous character, there is a key to erase the previous word.

I also need explanation on how it is done and the rational behind coding this way.