Problem of horizontal/vertical movement

somehow when i dragging objects or drawing curves, it all moves horizontal/vertical without using shift button, how can i fix this? i have restore setting to default and reopen Rhino, it doesn/t help.

Hello - if the ‘Ortho’ in the status bar at the bottom of the screen is bold, click on that to ‘un-bold’ it and Ortho will be off. Or run the Ortho command…

-Pascal

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thank you sir!