Stoichedon
The stoichedon style of epigraphy (from στοιχηδόν, a Greek adverb meaning "in a row") was the practice of engraving ancient Greek inscriptions in capitals in such a way that the letters were aligned vertically as well as horizontally. Texts of this form give the appearance of being composed in a grid with the same number of letters in each line and each space in the grid filled with a single letter; hence, there are no spaces between words, and no spaces or punctuation between sentences.