Related Clues:

• Shows at an expo
• Buggy versions, maybe
• Aspiring singer's tapes
• Group samples
• Out-of-the-box models
• Buggy versions, often
• Often buggy versions of software
• Early releases of a sort
• Band samples
• Software prototypes
• Bugs may lurk in them
• 'How to' explanations
• Test-driven cars
• Unfinished software releases
• Starts of many remodeling projects, briefly