Symbol 6340-2 from IEC 60417 - Title/Meaning: Finger/hand placement, index fingers of left and right hands Function/description: To indicate that the system requests the index fingers of the left and right hands to be placed together on the platen.
Additional information: 
See also IEC 60417-6339-1, IEC 60417-6339-2, IEC 60417-6339-3 and IEC 60417-6340-1.
Own work using: iso.org/obp/graphics/grs/e3decffc-3ace-4bc8-892c-c4c1d717f8b7 200.png
Vectorization:  Mrmw