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NOTE 7. STOCK-BASED COMPENSATION: Schedule of Stock-based Compensation (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Details        
Stock options grant 4,000 4,000 6,500 6,500
Stock options exercised $ 0 $ 1,000 $ 0 $ 0