A code-coverage-data object, a string, a pathname or
If object is a code-coverage-data object, this is used as-is.
If object is a string or pathname then it should name a file that was created by save-current-code-coverage or save-code-coverage-data. The data is loaded from this file using load-code-coverage-data and used.
Code Coverage File in the Editor User Guide
Code Coverage Current Buffer in the Editor User Guide
Code Coverage Set Default Data
Code Coverage Load Default Data in the Editor User Guide
LispWorks User Guide and Reference Manual - 13 Feb 2015