Mac OS 9.1 includes version 1.0.1 of USB Printer Sharing.
USB Printer Sharing 1.0.1 includes the following two changes:
1. Due to changes in NSL 1.1.3, Mac OS 9.1 includes a script that can indicate the current neighborhood as well as allow you to set the neighborhood. When you select the article "Sharing a USB printer" in Mac Help, you will see a diamond shaped icon labeled "Set my network neighborhood" that opens this script. Setting the neighborhood via entries in the Search Domain area of the TCP/IP control panel no longer works with version 1.1.3 of NSL.
2. In order to comply with changes made to Open Transport in Mac OS 9.1, USB PS no longer calls Open Transport at interrupt time.