Hierarchal Sheet - Bus - Abbreviate Contents

Question

In an unrelated answer, user @Steven demonstrated that it is possible to abbreviate the bus contents of a pin label of a hierarchal sheet block.

How is this accomplished, such that:

• SPI1{SPI{CLOCK MISO MOSI}}
• SPI2{SPI{CLOCK MISO MOSI}}

appears solely as:

• SPI1{SPI}
• SPI2{SPI} ?

Is there a means to display only:

• SPI1
• SPI2