Sample Rule File Listing. The figure shows examples of DROOLS Rules for block classification. DROOLS files meant for two epochs within the PLoS Biology dataset are available as a part of the software distribution accompanying this paper. They can also be downloaded from http://code.google.com/p/lapdftext/. The two files included are named epoch_7Jun_8.drl and epoch_5_7May.drl and are located in a folder called `rules' in the base directory of the installation. Experiments reported in this paper have been conducted using these rules for the block classification stage. These files are also included as supplementary material for this paper.