Index 0: Animation Frames
Index 1: Animation Frame Bases
Index 2: Miscellaneous (See below for full list of archives)
Index 3: Interfaces
Index 4: Empty (Pre 772: Sound Effects)
Index 5: Maps
Index 6: Empty (Pre 772: Music)
Index 7: Models
Index 8: Sprites
Index 9: Empty (Pre 839: Textures)
Index 10: Huffman encoding (Official name: Binary)
Index 11: Empty
Index 12: Clientscripts (music list)
Index 13: Font metrics
Index 14: Sound Effects (Pre 772: MIDI Instruments)
Index 15: Empty
Index 16: Locations (commonly called objects)
Index 17: Enums
Index 18: Npcs
Index 19: Objects (commonly called items)
Index 20: Sequences
Index 21: Spotanim
Index 22: Structs (Pre 745: Var Bit)
Index 23: World Map
Index 24: Quickchat
Index 25: Quickchat global
Index 26: Materials
Index 27: Particles
Index 28: Defaults
Index 29: Billboards (Used by models to determine wich textures and scale.
Index 30: Native libraries
Index 31: Shaders
Index 32: Loading Fonts & Images
Index 33: Loading Screens
Index 34: Loading Fonts & Images (jagex format images)
Index 35: Cutscenes
Index 36: Empty
Index 37: Empty (Pre 839: Gfx Config)
Index 38: Empty
Index 39: Empty
Index 40: Music
Index 41: World Map Labels
Index 42: Unknown World Map Data
Index 43: Diffuse Textures
Index 44: HDR Textures (high dynamic range textures)