The document summarizes a software project called SIGNO that was developed by Quadion for the Chamber of Notaries of the City of Buenos Aires. The 8-month project involved 3,000 hours of effort to create an electronic billing software. The software allows notaries to create invoices and budgets based on templates, integrate with tax authorities' web services, and includes accounting and client relationship management features. It addresses the challenge of new tax rules in Argentina requiring electronic billing for professional services.