s$ = form:Get()
form:Get(callback[, userdata])

There are two different ways of using this function: You can either call it with no arguments, in which case it will return a string containing the serialized data. Alternatively, you can also pass a callback function to it. In that case, the function you pass in callback will be called by form:Get() and it will receive the serialized data in the first parameter. If you pass the optional userdata argument, the value you specify here (it can be of any type) will be passed as the second parameter to your callback function.

callback

callback function

userdata

optional: user data to pass to callback function

s$

serialized data