improve documentation for edit.draw

Dependencies

• [2] 4LW3LB4J Merge text0
• [3] JNAQUQKB Merge lines.love
• [4] H5UZI3YN editor documentation
• [5] Y3ZR4TOK Merge lines.love
• [6] B4H3KLKR Merge text0
• [7] 3HHPHDOO couple of typos
• [*] N2NUGNN4 include a brief reference enabling many useful apps

Change contents

• replacement in reference.md at line 218
  [3.641]→[2.10:89](∅→∅),[2.89]→[3.89:191](∅→∅),[3.89]→[3.89:191](∅→∅)
  − * `edit.draw(state)` -- call this from `on.draw` to display the current editor

  − state on the app window as requested in the call to `edit.initialize_state`

  − that created `state`.
  [3.641]

  [2.91]
  + * `edit.draw(state, fg, hide_cursor)` -- call this from `on.draw` to display

  + the current editor state on the app window as requested in the call to

  + `edit.initialize_state` that created `state`. `fg` is the color for

  + foreground text (`Text_color` is a good default). Set `hide_cursor` to stop

  + showing a blinking cursor (usually because you want a `readonly` editor; see

  + below).