Use Delete to remove the currently selected object or objects from the design. Select the object on the canvas or in the FilmStrip or select multiple objects with one of the block selection methods (Box Select, Freehand Select, Point Line Select or Select All).
Note: Use Delete Points 
to delete single points. (To delete the selected objects
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Click Actions
on the toolbar and choose Delete. -
Control–click the selected object and choose Delete.
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Choose Edit > Delete.
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On full-size keyboards, press Delete ⌦.
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On Mac portable keyboards, press Function–Delete or Function–Backspace (fn ⌫ ).