Symbol 5517A from IEC 60417 - Title/Meaning: Multi-picture display Function/description: To identify the control by which the function for multiple picture in picture (PIP) or the function for the display of multiple pictures can be switched on/off.
Additional information: 
In actual use, the number of pictures (PIP) may be different from the number shown on the symbol
IEC 60417-5517 was changed to IEC 60417-5517A on 2006-01-27 in synchronous with the release of IEC 60417-5517B
Published in: Supplement M, 1994
Own work using: iso.org/obp/graphics/grs/f27ba271-dba1-40ba-8121-8fd93183bf5a 200.png
Vectorization:  Mrmw