up of the front window of one apartment, pauses, then  and pans to each apartment in turn, with the actors credits  appearing over the window of the apartment in which their character  resides. When characters left the series and an apartment was left  vacant at the end of an episode, question marks would appear for  that apartment in the credit sequence. When this occurred Channel  Ten would be swamped by calls from fans asking to move in to the  vacated apartment.