hi guyes
I create a group and add to group face

group1 = entities.add_group
face = group1.definition.entities.add_face(f[0], f[1], f[2], f[3])

Next I will rotate everything in this group

[X_AXIS, Y_AXIS].each { |axis|
	if not face.normal.samedirection?(Z_AXIS)
	   if face.normal.perpendicular?(axis)
		  angle = face.normal.angle_between(axis)
		  angle = 180 - (angle * 180 / Math;;PI)
		  rotation = Geom;;Transformation.rotation(group1.bounds.center, axis, angle.degrees)
		  group1.entities.transform_entities(rotation, group1.entities.to_a)
		end
	end
}

Next I need to move everything to the origin of global coordinates. How to do it?
group1.transformation.origin have zero coordinats, but group1 is not at zero.
how to move a group or its contents to another location?

@dezmo said:

@note = Sketchup.active_model.add_note 'Note', 0.8, 0.9

You may realised that is creating Sketchup::Text https://ruby.sketchup.com/Sketchup/Text.html
To change:

@note.set_text "This is another note"

Most probably to see changes, the view need to redraw.

Sketchup.active_model.active_view.invalidate

do delete:

@note.erase!

When i use:

@note.set_text "This is another note"
Sketchup.active_model.active_view.invalidate

then I get this (check image)

the text is superimposed on each other. Sketchup 2020

Hello,
I create note:

@note = Sketchup.active_model.add_note 'Note', 0.8, 0.9

But I cannot delete and change the note. Help please, I used different methods, but none helped.