OLEX: Getting started

On screen interface

Rotation of the model is performed using the right mouse button, whereas the selection of elements uses the left mouse button. Dragging the right mouse button while the Shift button is depressed allows the whole structure to be translated.

Selection of single objects

Visible objects can be selected/unselected by clicking on them with the left mouse button.

To select a whole fragment, right click on an element of the fragment, go to the 'Fragment' submenu and click on the 'Select' item.

Selection type	Result shown on the status bar
Atom	Coordinates
Two atoms	Distance
Bond	Length
Three connected atoms or two bonds	Angle
Two bonds separated by a further bond	Torsion angle

Useful Shortcuts for use in lists and for on screen selections:

Ctrl + A	Select all
Ctrl + U	Select None
Ctrl + I	Invert selection

Selection of regions

Multiple objects can be selected by dragging the mouse while holding down the left button. There are two different selection modes, selection of the front plane and selection with depth. The first mode works with the projection of the structure (i.e., you can only select from the visible elements): elements which lie wholly or partly within the selection frame are selected. The second mode works with 3D structures and it is possible to select overlapping elements: in this selection mode, only elements lying completely within the selection box are selected. To switch between modes use the corresponding button on the main toolbar.