Bylaws contain provisions concerning actual association operations, such as meetings, procedures for electing the board members and officers, and general duties of the board.  Sometimes the bylaws cover the same topics as the declaration.

Exhibit A includes the legal description of the real property referred to in the condominium Declaration.
Exhibit B displays the proportional interests of each unit in the common elements of the Association, including division of commerical and residential units for assessment purposes.

Articles of Incorporation initially create the corporation under state law and define the association's basic purposes and powers.  They may specify such things as the number of directors, terms of office, and other specifics about how the board functions.