Regular Expressions Cookbook, Second Edition -

"It’s not gibberish," Elias said softly. "It’s poetry. You just have to know how to speak the language of the machine."

He hit enter. The screen stayed black for a heartbeat. Then, thousands of lines of red text began to vanish. The "phantom" data was being isolated and purged. The Cookbook had provided the blueprint for a filter that could distinguish between a valid shipping code and a corrupted digital ghost. Regular Expressions Cookbook, Second Edition

"The problem isn't what's there," Elias muttered, his eyes scanning a recipe for nested delimiters. "It's what's hiding behind what's there." "It’s not gibberish," Elias said softly