"The access structure can be regarded as the search route the dictionary user follows during a dictionary consultation procedure. Bergen-Holtz and Tarp (1995:16) define it as the structure of lexicographical indicators directing the user to the information required."
Steyn, Mariza. 2004. "The Access Structure in Learner's Dictionaries." Lexikos 14 (AFRILEX-reeks/series: 14: 2004): 275-298