Functions
Functions are special commands that can be run in chat bots, overlay widgets, and Flow templates (such as the Generate Text node). Unlike Variables they allow extra options when using them.
The format for a Function is $(functionName [requiredOption] <optionalOption>)
When a Function does not require any options, it can be written simply as $(functionName).
The order of options does not matter, and when a Function uses a "value" option, Variables can also be used (see $(math) for best examples of this).