To modify the type of existing ReactionLink:
1. Select the target ReactionLink
2. Select [Component] - [Change Identity] menu.(or use right mouse button to popup the menu. )
The [Change properties of the reaction] dialog will popup.
3. Select the appropriate [Type], then click [OK].
Note: If it is in the "Select Move" mode (i.e. the arrow icon on the tool bar is being selected), you can open the same dialog by double-clicking the target ReactionLink.
You can input the name of the Reaction in this dialog if the Reaction is BaseLink.
