Is the job description an accessible variable within MaterialsScript?

I have a MaterialsScript library that I need to load.  I have it within the set of job files, so that it is copied over to the server upon execution, which puts it in ./_Files/Documents/'.  I then can call the library with "use LibraryName" after adding the location of the library file to INC path.   

I'd like to make the script more general, so that I can add this folder to my path with "use lib './_Files/Documents/';" and rename the Job Description in the Script Job Control to anything I'd like. 

I don't see where this variable is documented in the manual, so I am wondering if this is possible?

Thank you.