Selecting the hinge points. The Hinge Annotation Tool is used to select the hinge points. a. Use the first row of arrow buttons to select the first hinge point. Single arrow buttons (>/<) increase/decrease the hinge selection in single-residue increments. Double arrow buttons (>>/<<) increase/decrease the selection in 10 residue increments. The triple arrow button (>>>) increases in 100 residue increments. Use the "?" button if you are not sure what residue number is currently selected. Use the second row of arrow buttons, select hinge point 2, if there is one. If the hinge is triple stranded, use the third row for the third hinge point. Show all hinges to verify your choices. Click "Submit" when done. You will be asked to confirm your submission, then your job will be queued.