Chapter 1 ASSEMBLING THE TIMELINE 23 Previously, moving a group of composited segments was a very time-consuming process (or required use of the Avid clipboard). Note, however, that if you select multiple segments on any given track, the selection must be contiguous, and this includes filler. Make sure that you select the filler between two or more shots so that the empty space is moved as well. Hopefully, this step can be eliminated in future versions, but for now you must select it or the system will refuse to let you move the segments. In addition, if you have selected both video and audio seg- ments, you can move either the video or the audio segments ver- tically while moving everything selected horizontally. To do so, simply begin your move by clicking and dragging on the type of segment you want to move vertically. For example, if you want to move the video segments vertically, simply click on one of the video segments to begin your move. Restricting Segment Movement If you wish to precisely align the segments you are moving, you can hold a keyboard modifier down. The modifiers listed in Table 1.2 are available.