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  • You need to work out your equation within the limited space (see the marked area) of the glass wall. Erase the working to start your next recording. If you wish to join two or more videos, that should be possible in post-production, using a video editing tool.
  • For better readability, avoid standing behind your writing or write first and stand aside to elaborate. Writing stands out better against the black background.
  • You may choose to wear darker shades but not black. Avoid printed designs, t-shirts with logo, slogans etc.