Specifications for various file formats:
Pictures:
dxf.txt: Autodesk's Drawing eXchange Format
GIF-89a.txt: Comuserve's Graphics Interchange Format version 89a
jfif.txt: JPEG File Interchange Format
jpeg-6a.zip: Joint Photographic Experts Group format
mpeg-2.html: Motion Picture Experts Group format version 2
PNG.html: Portable Network Graphics format
SMP.html: DEC's Software Motion Pictures format
TGA-doc.ps.gz: Targa format
TGA-toc.ps.gz: Targa format (table of contents)
TIFF.html: Tagged Image File Format
Utah-Rasterfile.html: Utah "RLE" Rasterfile format
Sounds:
WAV.html: Microsoft's WAV format
Text Documents:
pwp.txt: Smith Corona's Personal Word Processor format
rtf.txt: Microsoft's Rich Text Format

Specifications for languages (or command or instruction sets):
MMXinstructions.html: Pentium MMX instruction superset
html20.txt: Hyper Text Markup Language version 2.0
html32.html: Hyper Text Markup Language version 3.2
rockwell.html: Rockwell chipset modem commands
sportster.txt: USR sportster modem commands
vrml10c.html: Virtual Reality Modeling Language version 1.0c

Terminal control sequences:
ansi.html: ANSI escape sequences
console_codes.html: Linux console escape sequences
vt100: vt100 escape sequences
vt100.color: vt100 color control escape sequences
xterm.html: xterm escape sequences

Hardware specifics:
quickcam.html: quickcam hardware specs