Drawing, understood as a language, is a tool of knowledge and transformation, able to isolate, simplify, and structure reality while anticipating architectural forms. Within the Florentine School of Architecture, the sign has long held a central role in education and research, connecting techniques, sciences, and creativity. Today, suspended between analogue and digital practices, drawing moves beyond representation to become a critical device for collecting data, synthesising knowledge, and articulating complexity. This first issue explores the sign as a means of constructing knowledge and architectural memory. Its sections on archives, programming, and dialogues with masters make the journal a laboratory of exchange, linking past and future and reaffirming drawing as an evolving yet enduring universal language.