If you want to reset your graphing window back to the default view, there is a quick way to do it without adjusting the window settings by hand.
Reset to the standard window
Here is Y1=X² drawn in a window that has drifted into the corner, with the axes pushed off-screen. It is the same parabola as always, just framed badly:

- Press
zoom. It sits in the top row, third from the left, and opens a numbered list of ready-made views.

- Choose
6:ZStandard. Arrow down to it and pressenter, or just press6to run it right away. - The graph redraws. ZStandard centers the origin and sets
both axes to run from -10 to 10, so the whole shape lands back in frame.

Good to know
- Still blank after ZStandard? The curve may live outside a
-10 to 10 box. Open the
zoommenu again and pick 0:ZoomFit. It keeps your left and right edges and rescales the top and bottom to fit the function, so a graph that was hiding above the window drops into view.
- Just need to nudge the view? 2:Zoom In and 3:Zoom Out in the same menu step closer or pull back from where you already are, without resetting anything.