Start exploring! Key shortcuts:
* `ctrl+enter` will open up the command palette and give you more of a
sense of your options
* `ctrl+e` makes the highlighted note editable. When you're done just hit
`ctrl+e` again to freeze its contents against accidental editing. At
most one note can be editable at any moment.
* When a note is editable, empty lines will show a little box icon on the
left margin. Click it to create a line drawing. Line drawings can only
live in their own lines separate from text.
* `ctrl+h` when hovering over a drawing will show you the options
available to you. Most operations involve holding down the mouse and
making a stroke. You can also start a stroke and press and hold `h`
without releasing to see options available to you mid-stroke.