:compact Compact style takes up less space than Nested or Expanded. It also draws the focus more to the selectors than to their

selector_replace($selector, $original, $replacement) Replaces all instances of $original with $replacement

change_color($color, [$red], [$green], [$blue], [$hue], [$saturation], [$lightness], [$alpha]) Changes one or more properties

opacify($color, $amount) Also known as: fade_in Makes

hsl($hue, $saturation, $lightness) Creates a Color from hue, saturation, and lightness values

str_slice($string, $start-at, $end-at:-1) Extracts a substring from $string. The substring will begin at index

length($list) Return the length of a list. This can return the number of pairs in a map as

comparable($number1, $number2) Returns whether two numbers can added, subtracted, or compared.

to_lower_case($string) Convert a string to lower case,

function_exists($name) Check whether a function with the given name exists.