Load/Save - Property Dialog
The Load/Save buttons are used to load or save the settings for the currently selected control.
This is best used to transfer settings between different controls (of the same type). It is not necessary to save controls that are on a form as these settings are automatically saved when the form is saved. Using the Load/Save property page is usually only used when you need to transfer settings between already existing controls.
For general information on how to use property pages, please see Property Dialogs.