The annotated profile showing a sand cay (Milman Islet) in the Great Barrier Reef Marine Park, Queensland, Australia, condenses a great deal of information into one diagram that shows the evolution of the sand cay ideogram based on elevations abstracted from a satellite image. Development of the sand cay ideogram is supported by the included ancillary information in numerical and alpha forms. The inclusion of BCCS codes, elucidation of the archimorphic sequence (upper right-hand corner) along with LME and ER designations (upper left-hand corner) places the annotated profile into an environmental context. The complete BCCS code, read across the islet from left to right (1Cr_frF_saBe_caU_foBe_caF_saCr_fr), identifies curved fringing reef and flat subarchetypes seaward of the carbonate beach, which is backed by a forested sand dune upland subarchetype. The fringing reef, flat, beach, and upland subarchetypes are graphically displayed as archimorphs that collectively combine into the hypothetical sand cay ideogram.