·    This is the 9th unit in the LC and is one calendar unit above the kinchiltun, i.e. it consists of 20 kinchiltuns. It is known that this calendar unit is not pronounced alawtun – this is just a name used by epigraphers for convenience. While it’s not entirely clear whether it is of itself a logogram or if it’s a compound with HAAB as part of it, the structure of the units above it (all without nicknames) – all with HAAB at the bottom – suggests that it’s the latter, a compound.

·    What distinguishes alawtun from the even higher units are the elements at the top, which appear to be a NAL and a K’AN.

·    There are at least 4 further units in the LC, but these haven’t been given nicknames. They are very rare, YAX HS2 Step 7 I1-O1 is an LC which has these higher units.

·    In QRG Stela F D13 / B13 it’s unclear whether there’s a “5” coefficient for the alawtun, and also why there’s a “0” preceding it.