This directory contains DABAX (DAtaBAse for X-ray applications) data files that can be optionally included in your XOP installation. To install some (or all) files, just copy them to your $XOP_HOME/data/dabax directory of your XOP installation. The data is accessed by using the Xop|Optics|Tables|DABAX main interface application. The data files are in ASCII format. The DABAX *.dat files are indexed to allow a faster access by XOP. The indices are stored in the files with the .HIdl extension which are created automatically by XOP when it first uses a particular data file. However, this process is generally very slow and it's recommended that the corresponding .HIdl file is installed to speed up the retrieval of the data. The BINARY HIdl files are different for UNIX and WINDOWS due to the fact that the ASCII files were written in different formats. The corresponding index files. If you modify the .dat file to customize to your needs, then you must delete the corresponding .HIdl file. A new .HIdl file will be created by XOP when callling by first time the file. You must have write permission in the $XOP_HOME/data/dabax directory to be able to modify DABAX files.