Select

Click on the black triangle on the lower right corner of the Rectangle Selection combo button to see the options of Selection.
- Rectangle selection : Provides easy selection when the fragments can be drawn around with a rectangle. Hold the mouse button down while selecting; release the mouse when you are ready.
- Freehand Selection : Push down the mouse button and move the mouse pointer around the fragment you would like to select then release the mouse button.
To select an atom, bond or group, click or select it (with active Rectangle Selection or Freehand Selection tool).
To select a structure you can double-click on one atom or a bond of it in Selection ( Rectangle or Freehand) mode.
To unselect, click on an empty place on the canvas.

Move on the canvas

- One atom, or bond:
  - Drag it on the canvas while one of the Selection tools is active.

- A selection
  - After selection (double click or selection by tool), move the molecule by dragging one of its atom. (See details here.)
  - After selection, drag the graphical object by its line.

To delete an atom or a bond click the Delete button on the Tools toolbar then click on the atom or bond, or by dragging you can select the structure you would like to erase.
You can delete a previously selected area by clicking on the Delete button or by pressing the Delete keyboard button.