Clicking the left mouse button on an enzyme name at the left of the display toggles a highlight. The Create tags command from the Edit menu will add tags to the database for all the matches whose enzyme names are highlighted. The command displays a dialogue box listing the enzyme names on the left, and the tag type to create for that enzyme on the right. Tag types must be chosen for all the listed restriction enzyme types before the tags can be created. Suitable tag types to choose are the ENZ0, ENZ1 (etc) tags.