Tests if Zim is connected to a particular server.
a character string or an expression that evaluates to a character string
1-character binary string. Evaluates to 1 ($True) if Zim is connected to the server name contained in string; if the server name is invalid or there is no connection, evaluates to 0 ($False).
Evaluates to $True if a previous CONNECT statement to ZIMSERV was successfully issued.