Symbol 6334B from IEC 60417 - Title/Meaning: Selection; affirmative acknowledgement; success; ACK 
Function/description: Alternative graphical representation. Same meaning as IEC 60417-6334A.
Own work using: iso.org/obp/graphics/grs/dbd256e3-c608-4bce-97b9-c51214b4eb34 200.png
Vectorization:  Mrmw