A combined log allows you to define which templates to use if a location has been drilled using more than one method. The pictured combined log below shows a borehole drilled initially by Cable Percussion (CP) with Rotary Coring (RC) follow on. In this log the Cable Percussion part of the borehole will be presented using the Cable Percussion Log followed by a line going across the log at the change point. This is then followed on by the Rotary Core part of the borehole presented with the use of the Rotary Core Log.