cecogram

thumb|Cecograms do not require postage stamps.A cecogram ( ), also known as literature for the blind, is a letter or a parcel that contains documents or items intended for visually impaired persons. Cecograms can be sent or received by such persons, as well as by organisations that provide assistance to the visually impaired. Cecograms are either partially or entirely exempt from postage.

== Etymology == The word cecogram derives from the French cécogramme. Ultimately, the word originates from the Latin caecus (blind) and the Greek grámma (γράμμα; letter, thing written).