Writing

The Markdown shortcuts that turn into headings, lists and emphasis while you type, and the ones you can turn off.

The small toolbar that appears over selected text, and the reminder of shortcuts that shows when you hold Ctrl or Cmd.

Six levels of heading, the panel that lists them, and the keys that move through it without touching the mouse.

Bulleted, numbered and checklist items, nesting them with Tab, and turning one kind of list into another.

Links to web pages, to other documents on your disk and to headings in the same document, and how to follow them.

Four ways to put a picture in a document, the difference between embedding and linking one, and what the editor does not do with images.

The slash menu that inserts blocks, the toolbar that edits tables, and the rules that keep them compatible with Markdown.

Notes attached to a passage, in three colours, which travel with the document and never print.

Curly quotes, dashes, ellipses and arrows written for you as you type, the quotation marks of your language, and how to turn each one off.

The spell checker and its languages on each system, adding words to the dictionary, and the language of the app itself.

Right-to-left writing for Arabic, Hebrew, Persian and other scripts, per document or for every new document.

Searching the document or every open tab, and a replace that keeps the capitals of what it finds.

What happens to formatting when text comes in from elsewhere or goes out, and the two ways to copy a document as code.