Executes the function funcname in a DLL you have loaded using the SPECIAL>LOADDLL command. The function will be called without options. It should return 1 if successful or 0 otherwise. The return value will be used to determine whether to execute the remaining commands or shift to another screen.
NOTE Special EXTERNAL is not related to Vensim's External functions. It simply provided a mechanism to call in functionality from outside of Vensim. You can use the SETTING>EXTERNALFUNCTION to change the external function library in use.
