• Click on the Rectangle Selection images/download/attachments/5317614/select-rectangle24.pngbutton or select another selection mode from the drop-down list: Lasso Selection images/download/attachments/5317614/select-lasso24.png or Structure Selection images/download/attachments/5317496/select-structure24.png.

    • to select an atom, bond or group, click or select it ( Rectangle Selectionimages/download/attachments/5317614/select-rectangle24.png or Lasso Selection images/download/attachments/5317614/select-lasso24.png mode).

    • to select a structure you can double-click on an atom or a bond of it in the Rectangle Selection or Lasso Selection mode, too.

    • Lasso Selectionimages/download/attachments/5317614/select-lasso24.png : Click on the mouse button and move the mouse pointer around the fragment; release the mouse when you are ready.

    • Rectangle selection images/download/attachments/5317614/select-rectangle24.png: Hold the mouse button down while selecting; release the mouse when you are ready.

    • To increase selection, press and hold down the Shift key while selecting.

    • To decrease selection, press the Shift key while clicking a selected atom, bond or group.

    • The Invert selection (Ctrl+Shift+I) will change the current selection such that everything previously unselected will now be selected and vice versa. If there is no selection , the entire image area will be selected.

    • To unselect, click on an empty place of the canvas.