This paper proposes a tentative notational or marking system which attempts to provide more information on the sociolinguistic constraints upon the use of linguistic features than has been the case in other systems. A review of other studies in language variation, particularly those of William Labov, suggests that much can be done toward interpreting and predicting the types of speech variation with more explicit knowledge of both the situational context and the actors. Research in language styles, attitudes, usage and lexicography shows a tendency to regard data in the light of the linguistic continuum and relevant sociolinguistic dimensions. The proposed notational system is presented under the headings of symbol, explanation and markedness. The pattern followed is a digraphemic one and the inventory of 50 items includes several dimensions that intersect with other areas. Through the use of 34 examples in Spanish, the tentative markinq system is then applied at the clause, phrase and word levels. This implementation of the marking system suggests that it may exhibit the potential of providing much of the linguistic and extra-linguistic information needed to interpret changes in progress and their direction. Some discussion of implications for further investigation concludes the essay. (AMH)