# Changing orientation of elements

Orientation of an element is changed by reverting the order of nodes of the selected elements.

To change orientation of elements:

1. Display a mesh or a submesh in the 3D viewer.

2. In the Modification menu select the Orientation item or click button in the toolbar. The following dialog box will appear:

- The main list shall contain the elements which will be reoriented. You can click on an element in the 3D viewer and it will be highlighted. After that click the Add button and the ID of this element will be added to the list. To remove a selected element or elements from the list click the Remove button. The Sort button allows to sort the list of elements IDs. The Set filter button allows to apply a definite filter to selection of elements of your group.

- Apply to all radio button allows to modify the orientation of all elements of the currently displayed mesh or submesh.

- Select from set of fields allows to choose a submesh or an existing group whose elements will be automatically added to the list.

3. Click the Apply or OK button to confirm the operation.

See Also a sample TUI Script of a Change Orientation operation.