The StoneAge protocol guide covers:
Overview — Historical context of the Type-2 "StoneAge" packet format
Packet Structure — Detailed 120-byte header specification with all 18 fields
Message Attributes — Bit-mapped flags (Private, Crash, Received, Sent, FileAttached, etc.)
Delphi 7 Implementation — Complete type definitions for packed structures
Reading/Writing Packets — Full code examples for parsing and creating packets
DOS DateTime Conversion — Functions to convert between TDateTime and DOS packed format
Attribute Manipulation — Helper functions for working with message flags
Compatibility Issues — Point systems, zones, domains, routing, and transit considerations
Message Threading — Understanding reply chains and message relationships
Kludge Lines — Control lines for MSGID, REPLY, INTL, TUID, and PATH
Advanced Topics — Bundle formats and practical examples