When editing scripts in intellishell, formatting is tricky,
so iy will be usefull of you can "shift-tab" on a line which should move the whole line one tab left, and "shift-tab" on a selected block should move the whole block one tab to the left.
At the moment, shift-tab acts as a tab.

First price, if you can bring the formatting style of Visual code to the editor it would be even better.
It is afterall, just javascript.