What Does PERL Stand For?

PERL has more than one possible meaning :

• PERL - Passivated Emitter And Rear Locally Diffused Solar Cells
• PERL - Practical Extraction And Report Language
• PERL - Pupils Equal React To Light
• PERL - Usually Lower Case Practical Extraction And Report Language

If you know of another acronym for PERL, please suggest it as a new acronym for PERL.