The idea is that a program or a smart manual can collect information from your coding. Suggest error preventing information, related information, enhancements and more.

This while you type in a window next to this information window.

Newly installed Ubuntu MATE with Focuswriter and the Ambient Noise software for the forest sound.

I think one can simplify this idea further. Let the programmer himself write the information/tip piece that is presented to him. So here you create a database of useful tips. So when you write the programming keyword or method name. An own defined text with tips is shown in the split window.