A pictorial description of the $FIftiMain format from CHM files. This image describes the $FIftiMain format from CHM files. It shows the relationships between WLCs, leaf nodes, index nodes, free space, the header and the /#TOPICS file. A word from the <title> tag in the header. T Leaf nodes& WLCs Index nodesLevel 1 Index nodesLevel 2 Offset in $FIftiMain file /#TOPICS file ... 1024 (header) variable 2048 variable 2048 2048 variable 2048 variable 2048 2048 2048 Key Header WLCs Leaf Index L1 Index L2 Free space Title anna t unty banana tty bits lood class ook y farce lute oal ot fore t xy batty bazaar beer beta binary cooky foot xy cooky foxy