Select nob

The select command adds one nob to the current selection. The command can be effected in two ways:
 * Using the context menue
 * Position the mouse cursor over the nob. The nob will be highlighted.
 * Open the nobs context menue by pressing the right mouse button.
 * Choose the "Select" entry from the menue and release the mouse button.
 * Perform a left double click on the nob.