Did you know...
...that JFormDesigner shows column/row headers for grid based layout managers.
Use them to insert or delete columns/rows and change column/row properties.
Right-clicking on a column/row displays a popup menu.
Double-clicking shows a dialog for column/row properties.
You can select more than one column/row by holding down the
Ctrl key or the Shift key while
clicking on the columns/rows successively.