// No arguments
myfunction

// All functions can take a variable number of arguments.
// These can be accessed from within the function with the aliases:
// $arg1, $arg2, $arg3... $numargs tells the amount of args passed.
myfunction word "text string" 1 3.14

// Getting a function's return value
retval = (myfunction)

// Trying to do a variable lookup on a builtin function will return an empty
// string. This can be used to distinguish builtin functions from user-defined
// ones.
if (strcmp $echo "") [echo builtin function]          // true
if (strcmp $myfunction "") [echo builtin function]    // false