Administrative documents Administrative documents such as company or office paper, envelope and visit card that here we will offer some explanation regarding each of them: Office paper: it must engender a suitable picture of the office or organization. It must be as an advertisement for the organization. In an office or organization, letter has many functions: transferring thinking to the paper, recording opinions and views, permanent record of ideas and proposals and finally area for offing a message and in designing an office paper all these points must be considered. Size of this paper is A4 or A5. Envelope: unity and smoothness has a main role in official documents. Paper, envelop and visit card must have the same design and also must be alike in visual shape and elements. Size of visit card is usually 5×8 cm and can be offered in both horizontally and vertically.