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Implementation tools: resources intended to prompt the user during performance of a task to facilitate team situational awareness, improve communication, prompt decision-making or guide key actions (in contrast to foundation tools). This term is synonymous with with ‘cognitive aid’ but is preferred as it emphasises the real-time context for use. Implementation tools may be ‘high-acuity’ (intended for use during a crisis) or ‘low acuity’ (intended for use during preparatory or routine activities). Cognitive aids may take the form of checklists, algorithms, graphics, mnemonics or emergency manuals.