The purpose of this function is to move the viewport
above an enlarged function plot. After sleeting this menu item (or pressing
the above toolbar button) an anchor symbol of
is placed in the middle of the active function plot window indicating that the
viewport scrolling is on. The cursor is changed to one of
,
,
or
symbols, depending
on the relative cursor position with respect to the
symbol, see Figure 5-29. This indicates the direction
of panning while the viewport is smoothly moved. Moving the cursor into
another direction the direction of the viewport scrolling is changed. The viewport
scrolling can be switched off by pressing any button the roller on the mouse.