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H C program header

HED HighEdit document

HEL Microsoft Hellbender saved game

HEX Macintosh BinHex 2.0 file

HGL HP Graphics Language drawing

HLP Help file

HOG Lucas Arts Dark Forces WAD file

HPJ Visual Basic Help Project

HPP C++ program header

HQX Macintosh BinHex 4.0 file

HST History file

HT HyperTerminal

HTM Hypertext document

HTML Hypertext document

HTX Extended HTML template

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