Sizing of stringer-stiffened composite panels loaded in compression is a complex task, as the nonlinearity associated with buckling can lead to difficulties. The finite element method has however led to an improved capability to predict the buckling and postbuckling behaviour for these structures. The input-generator to ABAQUS that is described is expected to increase reliability, when it comes to producing correctly the lengthy input-file for the finite element model used by ABAQUS. Together with the second program described below it will also be much easier to generate a number of input files. This program becomes useful when performing parametric studies, or to make a data-base of results for different alternative designs. Finally a set of "postprocessing" programs has been created, useful when evaluating ABAQUS output. An input-file generator for ABAQUS has been produced. It consists of three modules. In the center is the program (meshgen) reading from a file the necessary input to describe a flat or curved stiffened composite panel. The program writes the corresponding finite element input file for ABAQUS. For parametric studies there is a module (formgen) which reads an input file, defining the stiffened panel, but where for instance the panel curvature and stiffener height should be varied in discrete steps. Output from this module is a number of input files to be read by meshgen. The third module is a set of "post-processing" programs used to evaluate ABAQUS output files. This users-manual describe and exemplifies the input-format to meshgen, and the not so much different input-format to formgen. The use of the "post-processing" programs are also exemplified. Some documentation of the program is given in the last chapters.