is_superselector($super, $sub) Returns whether $super is a superselector of $sub. This means that

map_has_key($map, $key) Returns whether a map has a value associated with a given key.

saturate($color, $amount) Makes a color more saturated. Takes a color and a number between 0% and 100%, and returns a color

counter($args...) This function only exists as a workaround for IE7‘s

@debug The @debug directive prints the value of a SassScript expression to the standard error output stream. It’s

& in SassScript Just like when it’s used in selectors, & in SassScript refers to the current parent selector

Variable Defaults: !default You can assign to variables if they aren’t already assigned by adding the !default flag

Parentheses Parentheses can be used to affect the order of operations: p

Operations All types support equality operations (== and !=). In addition, each type has its own operations that it

map_merge($map1, $map2) Merges two maps together into a new map. Keys in $map2 will take precedence over keys