Ceefax pages could be displayed using fairly simple hardware, using a character generator and a simple latch to keep track of the attributes in force at a particular character position as the page is scanned. Antiope was only a little more complicated, the relevant attributes for each character position (about 13 bits, or a few more if further additional fonts were in use) being stored in a separate memory page in the decoder, distinct from the memory page used for the characters.