Margin Control

Shift–F1

Set left margin at cursor position.

Shift–F2

Set right margin at cursor position.

Shift–F3

Move left margin left.

Shift–F4

Move left margin right.

Shift–F5

Move right margin left.

Shift–F6

Move right margin right.

Shift–F7

Move cursor to left margin.

Shift–F8

Move cursor to right margin.