Accu-Chek Compact Plus Manuel De L'utilisateur page 106

If the time and date were not set at the time of testing, then the
i
memory location number is displayed instead of the time and
date.
If the memory contains both results that were saved together
with the time and date and results that were not saved with this
information, then you will see results shown together with their
time and date as well as results shown only with their memory
location number.
If you turn the meter off with the Test button, it shows you the
i
number of test strips remaining in the drum (see Chapter 2.3.2).
The meter turns off automatically if you have not pressed a
i
button for 60 seconds.
106
Memory location number
Using the meter as an electronic notebook