Texas Instruments TI-83 PLUS - Manual (Page 139)

TI-83 Plus Function Graphing 136
be valid for the current viewing window. When you have completed the
entry, press
Í to move the cursor.
Note: This feature does not apply to stat plots.
Panning to the Left or Right
If you trace a function beyond the left or right side of the screen, the
viewing window automatically pans to the left or right.
Xmin and Xmax are
updated to correspond to the new viewing window.
Quick Zoom
While tracing, you can press Í to adjust the viewing window so that
the cursor location becomes the center of the new viewing window, even
if the cursor is above or below the display. This allows panning up and
down. After Quick Zoom, the cursor remains in
TRACE .