Related Clues:

• Second in a series
• Old VHS rival
• Still in the debugging stage
• Software test version
• Type of ray
• Loser to VHS
• Phi ___ Kappa
• Stage that may need debugging
• Type of testing
• Prerelease software version
• Key letter
• Prerelease version
• As yet unmarketed, as software
• ___-test
• Type of test