L73001 is a "container" hot fix that contains "member" hot fixes which will update your SAS software components.
See "What is a container hot fix?" in the SAS Hot Fix FAQ for more information on container and member hot fixes.
A manifest listing the contents of each of the following "member" hot fixes is available:
L72001 manifest for SAS Threaded Kernel User Functions 9.4
L71001 manifest for Threaded Kernel National Language Support 9.4