Symbol 2105 from ISO 7000 - Title/Meaning: Alternate Function/description: To identify the control to select a function under application control.
Additional information: 
The corresponding key must be used in conjunction with another key.
Own work using: iso.org/obp/graphics/grs/6a49c6a0-7f58-452c-919e-5286872cc7ec 200.png
Vectorization:  Mrmw