(B)0.AThis is a test of ASCII, Latin-1, and box-drawing characters.

  lqqqqqqqqqqqqqqqqqqqqqqk
  x   Grüße aus Köln!    x
  mqqqqqqqqqqqqqqqqqqqqqqj

Above should be a box containing:

  "Gr<u-umlaut><ess-zet>e aus K<o-umlaut>ln!"

If you see this, your terminal implements VT220 
character-set switching correctly.