Abstract The package of FORTRAN programs described provides the field geologist with a system for processing and analyzing orientation data. The facilities offered include the plotting of stereograms, maps and rose diagrams together with rotations and statistical analysis of orientations. Orientation data may be supplied to the package in a variety of frequently used styles. Package facilities are specified by option statements, which the package interprets, that may be supplied in any sequence thus allowing maximum manipulative flexibility. The package has been successfully used to process and analyse structural data from a metamorphic terrain within the Norwegian Caledonides, but may be applied readily to other types of orientation data. The emphasis in writing this package was placed upon the production of usable graphical output, thus replacing tedious manual plotting and drafting tasks. These programs are not designed to undertake sophisticated interpretative operations on orientation data, these tasks remain with the user who will have hopefully more time in which to accomplish them.