Reports the current link and connection status.
The system variable "result" is set to one of the following values depending on the link and connection status:
|0||Link to Tera Term has not been made.|
|1||Connection to the host has not been made, but link to Tera Term has been made.|
|2||Both connection and link have been made.|
; If MACRO is not linked to Tera Term, testlink ; execute the connect command. if result=0 connect 'host'