Comtech EF Data DTMX5000 SpectraCast - Manual (Page 165)

Central Configuration Unit DTMX5000 IP Gateway
Rev. 1 B-29
All log messages are preceded by a single letter which indicates the color and
type of message, as displayed in the CCU event log. This enables you to search
for specific messages by color, as follows:
k = Black
b = Blue
p = Pink
r = Red
For example: Specify r[ to search for all red messages.