Having right of way entitles Alice to set up for a wide-then-close tactical approach and rounding. However, if she does so, she must comply with Rule 16.1 if she changes her course, with Rule 17 if it applies between her and Ted, and with Rule 18.4 by not sailing farther from the mark before jibing than she would have sailed if Ted were not present. Also, if Alice does choose to make the tactical approach to the mark, she will not be "sailing within the mark-room to which she is entitled." Therefore, she will not be exonerated under Rule 21 if she breaks Rule 16.1. When Alice jibes, Ted becomes the right-of-way boat, so Alice will lose her right to make a tactical rounding, and the rules that will apply to her will be those that applied to Annie in Diagram 3. However, after Alice jibes, if she sails within the space that mark-room entitles her to, she will enjoy the protection that Rule 21 provides.