This paper examines some textual devices that writers may use to pre-structure the activities of their readers. HyperText Markup Language (HTML) is used as an 'explicating device' to explore how writers can provide reading instructions, and how these can be experienced by readers. Structuring devices like paragraphs and sections, and hypertextual elements like notes and references are investigated in detail. In this way, the paper aspires to contribute to 'an ethnomethodology of textual practices'.