If you are looking to print your model or export it as a 2D paper document, you usually use LayOut (included with SketchUp Pro) or the standard Print dialog.
To Print directly from SketchUp 21.0.0:
To create professional construction documents (Paper plans): sketchup 21.0.0
If you’re still on 21.0.0:
Before performing a boolean union (Solid Tools) or massive component explosion, do File > Save As > [Model Name]_preop.skp. The 21.0.0 undo buffer sometimes fails on complex operations. If you are looking to print your model
No article about 21.0.0 is solid without addressing its flaws:
Symptoms: SketchUp loads, shows a blue screen, then disappears.
Fix: This is a graphics card driver conflict. Go to Extensions > Extension Manager and disable "SketchUp 3D Warehouse" temporarily. Update your NVIDIA/AMD drivers to the December 2021 release (not newer). To create professional construction documents (Paper plans):
Students with a valid .edu email can still activate version 21.0.0, provided the license was generated before 2022.
Warning: Avoid cracked versions of 21.0.0 found on torrent sites. These often contain ransomware or disable the "Save" function silently. Trust official Trimble channels only.