[1] Panvalet can be used to manage program source code, JCL, Macros/commands for utilities such as Easytrieve[3] and object module files.
[4] Cards were bulky, difficult to store and transport, difficult and costly to back up, and prone to catastrophic errors since one misplaced card could prevent a program from running correctly.
[6] Throughout much of its existence, the main competitor to Panvalet was The Librarian product from Applied Data Research.
As recollected by Piscopo, "Panvalet and Librarian basically divided the program library market between the two of them....
"[4] Computer Associates acquired Panvalet in 1991 when it purchased Pansophic Systems for $390M.