A skeleton of the TDS texmf directory tree:
bibtex/ BibTeX input files . bib/ BibTeX databases of common interest . bst/ BibTeX style files bin/*/ binaries, by system type (optional) doc/ see Section 8, Documentation fonts/ font-related files . <type>/ file type (e.g., PK) . . <mode>/ type of output device (for PK and GF only) . . . <supplier>/ name of a font supplier (e.g., public) . . . . <typeface>/ name of a typeface (e.g., cm) . . . . . <dpi>/ font resolution (for PK and GF only) metafont/ METAFONT (non-font) input files . base/ base distribution (e.g., plain.mf) . misc/ single-file packages (e.g., modes.mf) . <package>/ name of a package (e.g., mfpic) metapost/ METAPOST input and support files . base/ base distribution (e.g., plain.mp) . misc/ single-file packages . <package>/ name of a package . support/ support files for METAPOST-related utilities <program>/ TeX applications, by name (e.g., makeindx and dvips) source/ program source code by name (e.g., web2c, latex) tex/ TeX input files . <format>/ name of a format (e.g., plain) . . base/ base distribution for format . . config/ configuration files for format (e.g., texsys.cfg). . . misc/ single-file packages . . <package>/ name of a package (e.g., graphics) . generic/ format-independent packages . . hyphen/ hyphenation patterns . . misc/ single-file format-independent packages (e.g. texnames.sty). . . <package>/ name of a package (e.g., babel)