From the Publisher's Marketing Information:
This is the most comprehensive GM screen ever created for BX editions of the original RPG and comparable retro-clones. The inside and outside faces of each screen will be printed on 15 pt. cover stock, and glued together to create 30 pt. thickness!!!
The exterior of this 6-panel (12-page) screen features artwork by the legendary artist Arthur Rackham, and content panels include all the pertinent information any Classic (BX/LL) GM needs to run their game, including:
Experience point & spell level progressions for each character class
Class-based combat & saving throw tables
Class abilities & attribute adjustments
Tables for Clerical turning and Thieves' abilities
Variable damage by weapon; missile fire ranges; AC by armor type
Step-by-step outlines for both turn sequence & combat sequence
A simplified Treasure Types table
Comprehensive cost lists for weapons, equipment, and animals
Complete movement information (including dungeon, wilderness, airborne, and encumbered movement)
Henchmen/hirelings, mercenaries & specialists (recruitment, requirements, salaries, and abilities)