E7 Harmonic Structures Basic is a technical indicator designed for harmonic pattern analysis in trading. It identifies Point 'C' and Point 'D' structures and incorporates Fibonacci projections, Potential Completion Zones (PCZ), and Potential Reversal Zones (PRZ) to support detailed market analysis as outlined in E7 Strategies. The indicator currently detects a limited set of harmonic patterns, including Gartley, Bat, Butterfly, Crab, and Cypher formations. This version is labeled as Beta, with a more comprehensive version including additional structures planned for future release.