TIL
The TIL lump contains Tilesets. Each tileset is a 320x200 pixel page of maptiles. Each maptile is 20 pixels wide and 20 pixels high. 160 tiles fit in each tileset, in 10 rows of 16.
The format of the TIL data is exactly the same as the format of the MXS (Mode-X Screen) lump. More info on ModeX can be found here: ModeX Format
ARCHINYM.LMP . ATTACK.BIN . BINSIZE.BIN . BROWSE.TXT . DEFPAL#.BIN . DEFPASS.BIN . distrib.reld . FIXBITS.BIN . heroes.reld . heroform.reld . LOOKUP1.BIN . MENUS.BIN . MENUITEM.BIN . PALETTES.BIN . PLOTSCR.LST . SFXDATA.BIN . slicetree_#_#.reld . SLICELOOKUP.TXT . SONGDATA.BIN . UICOLORS.BIN . GEN . general.reld . BAM . Map Format . T . P . E . D . L . N . Z . DOR . DOX . DT0 . DT1 . DT6 . EFS . FOR . FNT . HSP . HSZ . ITM . MAP . MAS . MN . MXS . PAL . PT0 . PT1 . PT2 . PT3 . PT4 . PT5 . PT6 . PT7 . PT8 . SAY . SHO . SNG . STF . STT . TAP . TIL . TMN . VEH