CAPS Universe documentation  1.0.4
All you need to know to be successful
CAPS Printer Driver Executables Directory

This directory collects the installed printer driver executables. They are referenced in the Device Description INI files in the CAPS Printer Driver Database Directory and thus, CAPS is able to run the printing device's matching printer driver.

Each printer driver installs here its own executable. It can be shared between multiple printer devices.

All executable files in this directory should be owned by root.

Refer Setup CAPS Driver Executables Directory as well.