You can use keywords to filter general types of reactions or filter a specific reaction from the corresponding reaction three-dot menu.
The filtered structure is displayed in the left panel. Click on the 'X' next to the keyword to remove the filter.
You can also filter an exact reaction by filtering it from the result graph.
The filtered exact reactions are displayed in the left panel under the Filter tab. Hover over the reaction name to view the reaction scheme.
To modify a filtered structure, click on the structure thumbnail to open the molecule editor. To remove the filter, click on the 'X' next to the keyword reaction name.