RFXTRX Cover Stop/Preset command for automations

RFXTRX covers show up in HASS with 3 buttons (Up, Down, Stop/Preset)
Where can I find the codes/features and is there an overview for all 11 supported_features?
If I press the Stop/Preset button there is nothing to see in the log or history.
I want to use the Stop/Preset button in an Automation.