JetLDR is a general-purpose package loader for ZCPR3, Z3PLUS, and NZCOM.
It upgrades LDR and LLDR by adding the following features:
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   1.  Fast loading of all packages in a single sweep.
   2.  More rigorous validation and error checking.
   3.  Capability to load packages in relocatable (REL/ZRL) format. 
   4.  Support for Z3PLUS (CP/M Plus, CP/M 3).
   5.  Support for extended external environment system addresses
   6.  Deinitialization of IOP (B=0FFh on SELECT call)
   7.  Specialized RSX, BSX loading and configuration.
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JetLDR is supplied with Z3PLUS and NZCOM.  It is available separately from:
   Plu*Perfect Systems
   410 23rd St.
   Santa Monica CA 90402
author: Bridger Mitchell, 7/7/88