In contrast, in the case of Antiope the delivery packet was independent of the screen presentation. One 40-byte packet might contain several rows; another might contain only part of a row, if it contained several colour changes or accented characters (coded with two or three bytes). In return, colour changes, or switches to graphical mode (called "mosaic"), which each had to take up one character space in the row on a Ceefax page, could be made freely in Antiope, allowing the construction of more elaborate pages.