Foxit PDF Editor Pro offers pre-installed tickmarks that include symbols, numbers, and letters. These tickmarks can be used to annotate documents and are particularly useful for document review and reference purposes, such as audit working papers or financial statements, helping document workers explain their documents easily and effectively. They also enable efficient document navigation by allowing users to easily jump between tickmarks of the same style and color on pages.
To place tickmarks on a PDF, do the following:
Go to the Comment tab, click the inverted triangle icon on the Symbols, Numbers, or Letters command, and select a symbol/number/letter from the dropdown menu.
From the dropdown menu, you can select Size and choose a desired size before selecting a tickmark. If you enable the Auto-Increment option in the menu, the number or letter will be added in an increasing order. The application will remember your settings for symbols, numbers, and letters, and automatically apply them to new tickmarks until you modify the settings.
- The cursor will change to a shape displaying a preview of the selected tickmark.
- Position the cursor where you want to place the tickmark and click. Or drag a rectangle to define the size of the tickmark. By selecting the Keep Tool Selected command on the ribbon, you can continuously place multiple tickmarks on pages without the need to reselect the same tickmark.
- (Optional) Customize the color of the tickmarks. When you select a tickmark, a floating toolbar will appear. Click on the Switch color icon
on the floating toolbar to change the color of the tickmark. Alternatively, you can change the color through the Format tab in the right panel. To modify the color of a group of tickmarks with the same style and color, select the All marks with the same style and color option in the Format tab before making color changes. - (Optional) Repeat the steps above to place more tickmarks on the document as needed.
- To navigate quickly between tickmarks with the same style and color, select a tickmark and click the Previous
or Next 
button on the floating toolbar that appears when you click on the tickmark, or right-click the tickmark and choose Previous or Next from the context menu. - (Optional) Click on a tickmark with the Hand command or the Select Annotation command to select the tickmark, which will be highlighted with a rectangle. If necessary, you can perform any of the following:
- To resize the tickmark, drag the sizing handles located on the corners and sides of the rectangle.
- To move the tickmark, drag the rectangle to the desired location.
- To copy, cut, paste, or delete the tickmark, right-click it and choose the relevant option from the context menu.
- To arrange multiple tickmarks, select two or more tickmarks and choose a desired button from the floating toolbar to center, align, or distribute the selected tickmarks. You can also find these buttons in the Format tab or on the context menu after right-clicking the tickmarks. For more information about the buttons, please refer to Arrange comments.