nth function added to stdlib, doc updates

doc/Doc.md

@@ -34,16 +34,18 @@
 |`(remove list index)`|Remove a value at an index from a list|List with element removed|
 |`(len list)`|Get the length of a list|list length|
 |`(push list element)`|Add an item to the end of a list|new list with element added|
-|`(pop ..)`|||
+|`(pop list)`|Returns last element of list|Last element|
 |`(head list)`|Returns first element of a list|First element|
 |`(tail list)`|Return all elements of list except first one|List without first element|
-|`(first ..)`|||
-|`(last ..)`|||
-|`(range ..)`|||
+|`(first list)`|Returns first element of a list|First element|
+|`(last list)`|Returns last element of list|Last element|
+|`(range low high)`|Returns list with elements in range low .. high|`(range 1 5) => (1 2 3 4)`|
 |`(member list item)`|||
-|`(map ..)`|||
-|`(filter ..)`|`(filter (lambda (x) (> x 2)) '(1 2 3 4 5)) => (3 4 5)`||
-|`(reduce ..)`|||
+|`(make-list len)`|Return list with len nil elements|`(make-list 3) => (nil nil nil)`|
+|`(make-list-of len value)`|||
+|`(map ..)`||`(map (lambda (x) (+ x 10)) '(1 2 3 4 5 6)) => (11 12 13 14 15 16)`|
+|`(filter lambda list)`||`(filter (lambda (x) (> x 2)) '(1 2 3 4 5)) => (3 4 5)`|
+|`(reduce lambda acumulator list)`||`>>> (reduce (lambda (x y) (+ (* x 10) y)) 0 '(1 2 3 4)) => 1234`|
 |`(exit ..)`|||
 |`(quit ..)`|||
 |`(print ..)`|||