If you look at the DWL2 file you will find that it is in XML format.
<?xml version="1.0" encoding="UTF-8">
<username>This is the user</username>
<machinename>Here is the PC</machinename>
<datetime>16 april 2007 12:35:10</datetime>
The DWL file is in pure text format.
Nothing mentioned about the DWL2 file in the help file though.
The information displayed by WHOHAS is stored in a temporary DWL (drawing lock) file. A DWL file is automatically created when a file is opened and then deleted when the file is closed.Did you know? Running WHOHAS and selecting a DWG that is not open but still has corresponding DWL and DWL2 files because of a crash will simply delete the existing DWL and DWL2 files.