Clicking a step's reaction node icon
in the plan displays options for View Alternative Steps, View Evidence, and Exclude Step.
View Alternative Steps
Click the Alternative Steps tab to display all alternatives for the plan step.
Alternatives are grouped together based on the bond disconnected or formed in a transformation. The currently selected step is shaded and displays at the top of the list.
View Evidence
Click the Get Reactions link to display reaction results supporting the plan step. Click the CAS Reaction Number for a reaction to view its detail page.
Exclude Step
Click Exclude Step to remove it from the plan, which will automatically refresh after you select this option. You can also view and recover the excluded step.