mkpkfontdir is a tool for manipulating TeX directories and reorganizing them in various ways mimicking (after some transformations) the organization of your tfm files tree. mkpkfontdir can generate TDS trees, or mirror and flatten them for efficient recursive subdirectories searching (by making a pool of symbolic links that will be searched, for example). It has been successfully used in a modified MakeTeXPK, for instance, to put generated pk files at their "right" place in a structure hierarchy. It is also a great help for keeping consistency between the tfm and the pk trees, or simply for putting newly got pk files at their right place. Yves Arrouye , August 1995.