In Jasper iReport, ruler guidelines are used to position elements on a report. For example, a vertical guideline can be added that aligns a set of elements that span title, detail, and page footer. Dragging elements like static text will snap to the guideline.
|A Jasper iReport Ruler|
To delete the guideline, drag the arrow icon past the zero position of the ruler. For a vertical guideline, this is left. For a horizontal guideline, this is up.
Some tools delete guidelines by double-clicking. Some delete guidelines by a right-click menu operations. Jasper iReport adds guidelines by a click on the ruler and deletes them with a drag.