I once had to write some middleware for some warehouses based of an erp/crm subsidiary of the megacorp that rhymes with whoracle, the documentation was sparse specifically for the field I needed to modify, and once I got it working I saved 40MB of memory per PHP process by nuking the client side validator, fun times! The thrill of cobbling that together started me down the dark path to working for an API gateway appliance company, the darkness was immeasurable.