Chap 1
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    * NUMBERP is it a number (T or NIL)?
    * SYMBOLP is it a symbol?
    * ZEROP is it 0?
    * ODDP is it an odd number?
    * EVENP is it an even number?
    * EQUAL is it equal?
    * NOT output is reveresed (t is nil, nil is t).

Chap 2
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    * FIRST returns the first element of a list.
    * SECOND returns the second element of a list.
    * THIRD returns a third element of a list.
    * FOURTH returns a fourth element of alist
    * REST returns the rest of the list.
    * CAR cons left
    * CDR cons right
    * CADR cdr of the car
    * CADDR cdr of the cdr of the car
    * CONS construct a list
    * LIST create a list
    * LENGTH outputs the length of the list.
    * LISTP returns t or nil
    * CONSP returns T if item inputted is a cons cell (a basic list unit).
    * ATOM a predicate returns T if other than cons cell.
    * NULL a predicate, is the list empty????

Chap 3
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    * DEFUN define function.
    * EVAL evaluate the function (not often used, but explicit).
    * APPLY takes list objects as input.

Chap 4
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    * IF ---
    * COND ---
    * AND ---
    * OR ---
    * PLUSP is the number positive.

Chap 5
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    * SETF set global value
    * LET ---
    * LET* ---

Chap 6
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    * APPEND list function
    * REVERSE list function
    * NTH list function
    * NTHCDR list function
    * LAST list function
    * REMOVE -list function
    * REMOVE :count n :from end
    * UNION -set function
    * INTERSECTION -set function
    * SET-DIFFERENCE -set function
    * SET-EXCLUSIVE-OR -set function
    * MEMBER -set function
    * SUBSETP -set function
    * REMOVE-DUPLICATES -set function
    * ASSOC -table function
    * RASSOC -table function
    * SUBST -tree fucntion
    * SUBLIS -tree function
    * EQ compares pointers, address of objects (EQUAL compares lists)
    * EQL compares addresses and integers
    * EQUALP ---
    * = ---
    * KEYWORDP is the input a keyword list item.

Chap 7
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	* LAMBDA
	* MAPCAR
	* FIND-IF
	* REMOVE-IF
	* REMOVE-IF-NOT
	* REDUCE
	* EVERY
	* FUNCTION

Chap 8
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Chap 9
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    * FORMAT text formatting.
    * YES-OR-NO-P user select yes or no
    * Y-OR-N-P user select Y or N
    * READ read from keyboard
    * WITH-OPEN-FILE file stream object
    * DRIBBLE write interpreter session to log file.

Chap 10
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    * INCF increment by one or n
    * DECF decrement by one
    * PUSH add to stack
    * POP pull top var from stack
    * WHEN when condition is T
    * UNLESS unless condition is false
    * BREAK please fill in
    * ERROR please fill in