Strips are particularly useful when doing assignments. Basically it is a way of seeing several parts of a 3D spectrum next to one another at differing z-planes (see Visualising 3D Spectra for more information on strips). To manage your strips click Strips in your Spectrum Window Toolbar. + will add strips. The strips are numbered (top right hand corner) and the z-plane is displayed in the bottom left hand corner of each strip. There is a button for each strip and the active one is coloured green. will remove the active strip and Clear will remove all strips. Left and Right will move the active strip one place to the left or right; in this way you can change the order of your strips. Note that if you navigate from another window into a window containing strips, you will navigate to the active strip.