Particular marks, such as trim marks or color bars, can be displayed/hidden using this palette. Additional features for these marks are available in the Details of marks palette opened by clicking the 'More options...' button. Settings for marks can be saved, restored from previously saved settings etc.
Mark placement is limited by imposition margins. If margins are calculated automatically (option "Auto margins" on Info palette) they are calculated so that the marks fit in. If the margins are reduced manually, the marks will be placed according to their settings, but their visibility will be limited by the margin (they will be cropped). In such case a yellow triangle signaling a warning is displayed on the top right corner of the pallet, indicating that the margin is insufficient. This limitation does not apply to the rectangular cutting mark, custom PDF, numbering and custom marks (these marks are not cropped by imposition margins and they are not taken into account during the automatic calculation of imposition margins).
Button "Edit numberings and marks" activates a mode for adding and adjusting of more marks. The regime is deactivated by pressing the button again. You can find more details regarding numbering and custom marks here.
Only trim marks, registration marks and sheet description controls are available in Auto mode. Some marks are only available in Extended mode and in Expanded palette view (button on title bar).