fillet feature
The Fillet PropertyManager appears when you create a new fillet feature, or when you edit an existing fillet feature. The PropertyManager displays the appropriate options based on the type of fillet you create. The PropertyManager remembers its last used state.
Two PropertyManager toggle buttons are available:
Manual. You maintain control at the feature level.
FilletXpert (Constant radius fillets only). The SolidWorks software manages the structure of the underlying features.
When you edit a fillet using Edit Feature, the Fillet PropertyManager appears with no toggle buttons.