What is Reset properties button for?
An what is the form data data or this is a typo bug??
The 'reset' will reset the form back to it's original state. Example on form succes you can clear the form so you can add another entry.
The tooltip is a typo I believe.
Yes but how works the CLEAR DATA on properties panel. It clears the data with check or without checked.
With clear data not checked, it just clears the Server Connect (response) data. With clear data checked, it also erases the form fields
Edit: My answer might be wrong, check Sid's next reply
form.reset = Reset the form, restoring all fields to their default values.
form.reset with clear data = Above + clear the data stored in form's response object.
This clear data is same as Server Connect reset option.
Naming is inconsistent, but hopefully this makes it clearer.