### Literals
The simplest form of expressions are literals. Literals are representations
-for PHP types such as strings and numbers. The following literals exist:
+for PHP types such as strings, numbers, and arrays. The following literals
+exist:
* `"Hello World"`: Everything between two double or single quotes is a
string. They are useful whenever you need a string in the template (for
writing the number down. If a dot is present the number is a float,
otherwise an integer.
+ * `[foo, bar]`: Arrays are defined by a sequence of expressions separated by
+ a comma (`,`) and wrapped with squared brackets (`[]`). As an array element
+ can be any valid expression, arrays can be nested.
+
### Math
Twig allows you to calculate with values. This is rarely useful in templates