Part Modeling > Engineering Features > Round > Transitions > About Round Transitions
  
About Round Transitions
Use transitions to connect overlapping or discontinuous round pieces. Default, context-sensitive transitions are created when you create rounds. They are not listed in the Transitions list.
Modify an existing transition in the following ways:
Define a Transition—Change the transition type.
Delete Transitions and Make a New Transition—Delete one or more transitions to free references and replace them by making a new transition for the affected geometry.
 
* Do not use Delete transition from the shortcut menu to remove a transition type from the Transitions list.
To preview various transitions before selecting one, place your cursor over each transition type in the Transition Type box. The corresponding transition geometry is highlighted in the graphics window.