Canon MB5450 Series Online Manual page 279

Touch
Touch with your fingertip, pressing lightly.
Keep touching the "next" (or "back") icon to move forward or back through menus or photos continuously,
for example.
Flick
Flick up, down, left, or right on the screen with your finger.
Flick to switch menus or move forward or back through photos, for example.
Drag
While lightly touching the screen, move your finger up, down, left, or right.
Drag to view listed items or move sliders, for example.
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