command + delete : delete characters before the pointer to the beginning of the line
command + d : copy the contents of that line and paste it on the line below
control + command + j : jump to the definition
option + command + p : refresh the canvas
command + 0 : hide/show the navigator
shift + command + y : hide/show the debug area
control + m : separate a selected line onto multiple lines
command + +/- : zoom in/out
option + command + ◀️/▶️ : code folding/unfolding
Control + A + Control + I : re-arrange code