# Custom attributes

The fo/attrs folder houses custom attribute configuration files that override the standard attributes in org.dita.pdf2/cfg/fo/attrs.

These files define the appearance of different elements in XML assets when they are rendered to PDF output. The different DITA elements are organized into files by element type – index-related definitions in index-attr.xsl, table-related definitions in tables-attr.xsl, etc.

The XSL attribute sets defined in these files can be used to override the presentation of DITA elements, including font size, color, spacing, etc.