Accepted Practices Exchange (APEX) - an initiative of the Convention Industry Council. The mission of APEX is "To spearhead an industry-wide initiative that brings together all stakeholders in the development and implementation of industrywide accepted practices which create and enhance efficiencies throughout the meetings, conventions and exhibitions industry." Accessibility - availability or approachability for all persons, regardless of a person’s physical or mental limitations Accommodation - guest bedrooms occupied by meeting attendees accompanying person - any individual who comes with a participant, not necessarily involved with the meeting sessions; guest or spouse of an attendee accrual accounting - income is entered when it is earned and expenses are entered when they are incurred, not necessarily when they are paid acetate- transparent material on which information for an overhead projector is