Money.Net web socket interface connection, specified as a moneynetws
object created using the moneynetws function.
Money.Net symbol, specified as a character vector, cell array of a character vector, or string
scalar to denote one symbol.
Example: "IBM"
Data Types: char | cell | string
Expiry type of options, specified as the values "weekly" for
weekly expiry or "monthly" for monthly expiry. You can specify these
values as a string scalar or character vector.