Properties - Drop-down list - "General" tab
Enter the title for the drop-down list here. Click here for more information.
Display title in control
The title will be displayed in the edit field in the browser.
The drop-down list becomes a mandatory field.
First entry on list is blank
This setting will insert an empty entry in front of the other entries.
Display as slider
The drop-down list will be displayed as a slider in the end device. In so doing, the values that have been defined on the Entries tab will be used for the scale of the slider.