Everything in the settings menu, in the order you see it on the watch. Some rows depend on your watch: AMOLED watches have always-on display options that MIP watches don't.
Status, Device ID, Activate, Buy PRO, Registered to, Reset Pro status. See Free vs PRO & Activation.
Your profiles and + Add Profile. Each profile has Load Profile, Change name, Change Color, Duplicate and Remove. See Profiles.
Apply a ready-made style. See Themes.
Pick on screen, or a list of all the fields on your watchface. See Picking a Datafield. Each field has:
See Time Options. A live preview, with:
Available plugins and whether they are installed. Choose one for a QR code with more information. See Plugins.
Updates every field now. See Refresh Time.
The version of your watchface. Please mention it when you report a problem.