.ocl file???

Hello -

Upon moving my Media Cache Files and moving and cleaning my Media Cache Database, I noticed where PPro's default location to put these files, there is a folder named PTX containing files with an .OCL extension.

The dates and times are all the same on all the files and are from last year.

The total size of all the files combined is 1.7mb.

Does anybody know what these are exactly?

Any insight as to what these pertain to would be greatly appreciated.

Thanks!!