This paper explores the role of cues in manipulating attention with the purpose of understanding their potential value to attention aware systems design. Four dimensions of attentional processing are presented along which recent findings in the attention literature can be conceptualised: (1) Locus of control; (2) Spatial cue information; (3) Semantic cue information; (4) Timing of the cue. We suggest that they provide a useful framework for understanding the complexity of attention processing for the attention design community.