Symbol 5471 from IEC 60417 - Title/Meaning: Frame by frame, general Function/description: To identify the control to operate in a frame by frame mode, i.e. for still pictures which are viewed individually.
Additional information: 
The triangle may be filled in.
On video equipment, symbol 5471-1 may be used
Published in: Supplement M, 1994
Own work using: iso.org/obp/graphics/grs/17c9619e-3896-4276-92cb-94f5038128b4 200.png
Vectorization:  Mrmw