Teletext is a broadcast standard for displaying text and low-resolution graphics, accessible from most cinescope-based tv sets made between late 80's and 90's.
These formats can be opened on zxnet teletext editor by drag'n'drop:
- bbc micro display ram
- t42
- ep1
- binary dump level 1 pagedata
- txt (you can drag'n'drop a simple "40columns x 25 lines" txt file, and start drawing/editing over it)
- and just like jummbox, both zxnet and edit.tf teleletext editors stores the updated edited picture information encoded as base64 on its url
