The keyword matching feature will highlight keyword pairs in the editor as you can see in the image below.
The TRY, CATCH and END TRY keywords are highlighted so you can see that they belong to each other
If the cursor is located on a RETURN statement then the matching FUNCTION or METHOD will be highlighted,
The color for the highlights can be set in the Tools/Options dialog under the Environment/Fonts and Colors node. The X# specific colors all start with the text "X#"