Document eval, quasiquote' and quote'.

Also, fix the usage of `setv`.

docs/language/api.rst

@@ -381,6 +381,12 @@ between the operands.
 eval
 ----
 
+`eval` evaluates a quoted expression and returns the value.
+
+.. code-block:: clj
+
+   => (eval '(print "Hello World"))
+   "Hello World"
 
 eval-and-compile
 ----------------
@@ -719,6 +725,39 @@ the `print` form is used to output on screen. Example usage:
 .. note:: `print` always returns None
 
 
+quasiquote
+----------
+
+`quasiquote` allows you to quote a form, but also to
+selectively evaluate expressions, expressions inside a `quasiquote`
+can be selectively evaluated using `unquote` (~). The evaluated form can
+also be spliced using `unquote-splice` (~@). Quasiquote can be also written
+using the backquote (`) symbol.
+
+
+.. code-block:: clj
+    ;; let `qux' be a variable with value (bar baz)
+    `(foo ~qux)
+    ; equivalent to '(foo (bar baz))
+    `(foo ~@qux)
+    ; equivalent to '(foo bar baz)
+
+
+quote
+-----
+
+`quote` returns the form passed to it without evaluating. `quote` can
+be alternatively written using the (') symbol
+
+
+.. code-block:: clj
+    => (setv x '(print "Hello World"))
+    ; variable x is set to expression & not evaluated
+    => x
+    (u'print' u'Hello World')
+    => (eval x)
+    Hello World
+
 require
 -------
 

docs/language/core.rst

@@ -429,11 +429,11 @@ as an example of how to use some of these functions.
 .. code-block:: clojure
 
    (defn fib []
-     (setf a 0)
+     (setv a 0)
-     (setf b 1)
+     (setv b 1)
      (while true
        (yield a)
-       (setf (, a b) (, b (+ a b)))))
+       (setv (, a b) (, b (+ a b)))))
 
 
 Note the ``(while true ...)`` loop. If we run this in the REPL,