Samsung SM-X510 User Manual page 48

Apps and features
Screen off memos
You can create memos by writing on the screen without turning on it.
When the screen is off, double tap the screen while pressing and holding the S Pen
button.
When you tap Save after writing a memo, the memo will be saved to Samsung Notes.
Change the pen
colour.
Change the line
thickness.
Eraser
If this feature is not turned on, open Settings, tap Advanced features → S Pen, and
then tap the Screen off memos switch to turn it on.
48
Save the memo in
Samsung Notes.
Extend the page.