From Teflpedia

Form-filling is a written language function that may be needed to deal with bureaucracy, e.g. making a visa application.[1][2]

English language learners may need to do this in English. Students may therefore need to practise filling in forms with their own personal details, such as surname, first name(s), personal title, date of birth (see date), sex/gender, occupation, building address, marital status, telephone number, email address, etc.