Sony PCM-A10 Help Manual page 27

Indicates the file number of the playing file in the format (current file number)/(total number of files to play).
8.
Clear Voice indicator (only indicated for the files in [
Indicates that [Clear Voice] is set to one of the following on the OPTION menu.
: Clear Voice 1
: Clear Voice 2
9.
Sleep timer indicator
Indicates that the sleep timer function is active.
10.
Protect indicator
Indicates that the file you are playing is protected.
11.
Equalizer indicator
Indicates that a sound quality setting is selected for [Equalizer] on the OPTION menu.
12.
Track mark number
Indicates the track mark number, if added, of the current playback point.
13.
Key indicator
Indicates the musical pitch (key) selected for [Key Change] on the OPTION menu.
14.
Playback progress bar
Indicates how far playback of the file has progressed.
15.
Elapsed time
Indicates the elapsed time of the current playback.
Recorded Files])
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