Controls the time spent on each image in the loop. Moves loop ahead one frame. Moves loop back one frame. Changes current frame and loop bounds between opposite loops. Draws map background over the current loop.
Set loop bounds first.
Multiple keys which are to be struck simultaneously will be separated by a '-'. For example Alt-L above. 3-min interval images are shown over the Great Lakes on Nov. 14, 1995. Loop bounds automatically set to frames1-38. The LS command is useful for creating a loop which contains imagery from the various channels for a particular time, allowing you to compare the different channels and products with each other.