Pentax K-5II Operating Manual page 37

Guide Indicators
The following indicators appear on the monitor to indicate the keys,
buttons and e-dials that can be operated at that time.
Example:
Four-way controller (2)
2
Four-way controller (3)
3
Four-way controller (4)
4
Four-way controller (5)
5
Front e-dial
R
Rear e-dial
S
3 button
4 button
Green button
|
L button
i button
Shutter release button
|/Y button
35
1