Hi,
Here is a bit updated lapper.ini for PSPad

You can use PSPad to open your lpr files. http://www.pspad.com/en/

To install the lapper.ini
Copy the lapper.ini in (Path where you installed PSPad)...\PSPad editor\Syntax . ( default is C:\Program Files\PSPad editor\Syntax )
Open PSPad and under Settings - Highlighters setting click on <not assigned> and select on the right side lapper and Apply

Nice work Tim[NL] - lot easier to spot and differentiate what's going on in the code.