Symbol 2300 from ISO 7000 - Title/Meaning: Fast cursor down 
Function/description: To identify the control or key that moves the pointer or cursor on a computer screen down at a quicker than normal speed.
Own work using: iso.org/obp/graphics/grs/273e8179-e644-439d-bbc9-5fea6003b871 200.png
Vectorization:  Mrmw