1) The document discusses the idealization of linguistic data, which includes regularization, standardization, and decontextualization. Linguists regularize spontaneous speech, standardize data by selecting standard dialects and homogeneous informants, and remove data from its original context and situation.
2) It also discusses macrolinguistics, which focuses on communicative competence rather than just linguistic competence. Macrolinguists study language in real communicative situations rather than just idealized sentences.
3) Text analysis and discourse analysis are two areas of macrolinguistics. Text analysis looks at suprasentential organization and formal cohesion devices, while discourse analysis examines language use and considers extra-linguistic variables.