Choose the Eraser tool and swipe across the content you want to erase. You can set the eraser type and size, and the content type to erase:

You can use the Pen Tool to erase your notes just like you how you might cross out mistakes with a pencil! All you have to do is scribble over the words or lines you want to erase and they magically disappear! It's a quick and easy way to clean up your notes and keep them looking neat and tidy.
<aside> 💡 Keep in mind that any strokes outside of your initial stroke may not be erased, including dots for letters like "i". You can either scribble over these extra strokes afterwards or ensure they are covered by your initial stroke as in the examples below.

The dot above the “i” won’t be erased.

The dot above the “i” will be erased.

You can also draw horizontal lines back and forth on the strokes to erase them.
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First, select it with a finger-tap or click, then you can:
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More ways to edit text boxes: Movable text
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More ways to edit full-page text: (Apple only) Full-page text
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<aside> <img src="notion://custom_emoji/16bb6423-e4bd-4de7-9dfd-51258f2af4dc/28bb7402-73d2-803c-af40-007aeec60c07" alt="notion://custom_emoji/16bb6423-e4bd-4de7-9dfd-51258f2af4dc/28bb7402-73d2-803c-af40-007aeec60c07" width="40px" />
This is available in Goodnotes for Apple platforms only.
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Use the Lasso Tool to select and manipulate any part of your notes.
First, select it with a finger-tap or click, then you can:
Move by dragging it to a new location and tapping outside the selection to apply the change.
The Object Alignment feature helps you align objects precisely, guide lines appear as the selected object nears alignment with another. Clear cues indicate centering (dashed guide lines) and edge alignment (solid guide lines). Release to snap into place. This feature can be toggled from the More (…) menu > Align Objects.

Resize with the side handles.
Scale with the corner handles.
Rotate with the protruding “Rotate” icon.
<aside> ➡️
More ways to edit images: Image Tool
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Move a comment thread: Long-press the comment pin until it gets larger, then drag it.
Open a comment thread: Tap the small pin representing the thread.
Edit / Delete / Share your comment: Tap the ... button to the right of it > Edit / Delete / Copy Link to Comment.
Resolve / Unresolve / Share your comment thread: Tap the ... button to the right of it > Resolve / Unresolve / Copy Link.
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<aside> <img src="notion://custom_emoji/16bb6423-e4bd-4de7-9dfd-51258f2af4dc/28bb7402-73d2-803c-af40-007aeec60c07" alt="notion://custom_emoji/16bb6423-e4bd-4de7-9dfd-51258f2af4dc/28bb7402-73d2-803c-af40-007aeec60c07" width="40px" />
Edit and Resolve for comments is not supported in Goodnotes for Android, Windows, and Web.
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