Nothing
From UBot Studio
$Nothing is a Text Function.
The function returns an empty value. This is a great function for removing unwanted words or symbols from a list item when used in conjunction with the $replace function.
Example
navigate("http://www.ubotstudio.com/playground/simple-form", "Wait") wait(3) type text(<about me textarea>, $replace("I really love UBot Studio", "really", $nothing), "Standard")
Running the script replaces the word "really" in the sentence "I really love UBot Studio" with the nothing function, which simply inserts a blank space where the word used to be in the sentence.