Org-mode

Basics

Tab: toggle headlines this headline only -> also direct children headlines -> entire subtree
S-TAB: toggle global headlines top-level headlines -> all headlines -> everything
C-RET/C-S-RET: add new item above/below
M-RET: add new headline below
M-S-RET: add new headline above
C-c -: convert list from itemize to numbered
S-LEFT/RIJHT: same as C-c -
M-UP/DOWN: move item above/below
M-LEFT/RIGHT: change item’s indent [ ]

bold, italic, underlined, code, verbatim, ~~strike-through~~