Symbol 5463 from IEC 60417 - Title/Meaning: Teletext mode Function/description: To identify the control and general indication for teletext (broadcast videography) mode.
Additional information: 
Published in: Supplement M, 1994
Own work using: iso.org/obp/graphics/grs/76c96a22-6e5e-4519-afdc-198920643da4 200.png
Vectorization:  Mrmw