The credit dot means a test report is waiting

In attract mode, a dot after the credit count means the game has a test report to show. No dot means the diagnostics found nothing wrong. Handy when checking a game on location.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Three, Clay Harrell (pinrepair.com)