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  1. Glossary

  2. 

  3. Stack notation: "<stack before> -- <stack after>". Rightmost is

  4. top of stack (TOS). For example, in "a b -- c d", b is TOS

  5. before, d is TOS after. "R:" means that the Return Stack is

  6. modified. "I:" prefix means "IMMEDIATE", that is, that this

  7. stack transformation is made at compile time.

  8. 

  9. Word references (wordref): When we say we have a "word

  10. reference", it's a pointer to a words *code link*. For example,

  11. the label "PLUS:" in this unit is a word reference. Why not

  12. refer to the beginning of the word struct? Because we actually

  13. seldom refer to the name and prev link, except during

  14. compilation, so defining "word reference" this way makes the

  15. code easier to understand.

  16.                                                         (cont.)