One-Based Indexing for Multiport Switch Data Ports
The sf_semantics_hotel_checkin model uses a Multiport Switch block. This block uses one-based indexing for contiguous ordering of three data ports.
When you increase the size of the block icon, the indices are visible on the data port labels. You do not have to open the block dialog box to determine whether the data ports use zero-based or one-based indexing.