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(elisp)Evaluation

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Evaluation
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   The "evaluation" of expressions in Emacs Lisp is performed by the
"Lisp interpreter"--a program that receives a Lisp object as input and
computes its "value as an expression".  How it does this depends on the
data type of the object, according to rules described in this chapter.
The interpreter runs automatically to evaluate portions of your
program, but can also be called explicitly via the Lisp primitive
function `eval'.

Intro Eval

Evaluation in the scheme of things.

Forms

How various sorts of objects are evaluated.

Quoting

Avoiding evaluation (to put constants in the program).

Eval

How to invoke the Lisp interpreter explicitly.