LDraw.org Standards: Quick Reference Guides
Lists all the different LDraw.org specifications in one page.
These documents govern the content of LDraw DAT files.
These documents govern the content of DAT files that are in the LDraw.org Official Library.
Quick reference guides
Guides for various aspects of the LDraw language
A reference for the LDraw primitives in the \LDraw\p directory. Primitives are defined as highly re-usable components of LEGO parts modelled for LDraw.
A guideline for implementing localisations for the LDraw System of Tools
A reference of the META commands that have been officailly adopted by the LDraw.org File Format
A reference of known META commands created for use by 3rd party LDraw programs