This chapter contains a lot of explanations for terms
↓, which you might want to
↓look up later
↓. Because better sooner
↓ than later, although later
↓ has been repeated twice
↓. Actually, thrice
↓ now.
Do you not want to look any of them up
↓ right now? No problem. You will be able
↓ to do it later, in the index
↓.