data_low..data_high,
such as 1..10, where RealView Debugger
locates the first occurrence of any data value within the range 1 to 10
being read from, or written to, memory.
data_low..+len,
such as 40..+10, where RealView Debugger
locates the first occurrence of any data value within the range 40 to
50 being read from, or written to, memory. That is, the len
of 10 represents the offset value.