1. Region - For Ontario these are grouped by the postal codes below, which approximate the equivalently named Canada Post areas with some third level exceptions (A1?).

National Capital Region (NCR) - K1, K2, K4, J8, J9
Greater Toronto Area (GTA) - M (all), L1, L4, L5, L6
Ontario (Eastern) - K0, K3, K5, K6, K7, K8, K9
Ontario (Central) - L0, L2, L3, L7, L8, L9
Ontario (Southwestern) - N (all)
Ontario (Northern) - P (all)

2 Designation - Certified members of ATIO will have either successfully passed the CTTIC Certification Examination process in their category, or been accepted through the on-dossier certification procedure.

Candidates for Certification are candidates for ATIO certification, admitted on the basis of their education and training or their professional experience. They join in order to acquire the skills and experience that will help them pass the national certification examination or present a complete dossier, for on-dossier certification. Their language combinations are indicated for information only.

3 Specializations - ATIO-recognized specialists have undergone a rigorous process to verify their training and experience in their specialty. They have demonstrated in-depth knowledge of their field. The specialization recognition system was implemented in 2001 and will be extended to additional fields.

4. Areas of Work - These are indications of members' preferred subjects, based on their training, experience or interests. They have not been verified by the Association under the specialization recognition system, or perhaps specialization recognition is not available in their area of work.