var = value;

var = cond ? value_if_true : value_if_false;

var = function (x) x + x;

module name(…) { … }
name();

function name(…) = …
name();

include <….scad>

use <….scad>

undef undefined value
PI mathematical constant π (~3.14159)

n + m Addition
n - m(Subtraction)
n * m(Multiplication)
n / m(Division)
n % m(Modulo)
n ^ m(Exponentiation)
n < m(Less Than)
n <= m Less or Equal
b == c Equal
b != c Not Equal
n >= m Greater or Equal
n > m Greater Than
b && c Logical And
b || c Logical Or
!b Negation

$fa minimum angle
$fs minimum size
$fn number of fragments
$t animation step
$vpr viewport rotation angles in degrees
$vpt viewport translation
$vpd viewport camera distance
$vpf viewport camera field of view
$children number of module children
$preview true in F5 preview, false for F6

list = […, …, …]; create a list

var = list[2]; index a list (from 0)

var = list.z; dot notation indexing (x/y/z)