I would like to launch another idea related to "michiton".
I found in Capelli book (page 171) an abbreviation that looks very similar. If you read it as "inchacon" or "inchaton" it can be the abbreviation for "inchoacione" or "inchoatione".
Based on Latin dictionary it means:
inchoo, inchoare, inchoavi, inchoatus=
begin/start (work); set going, establish; draft/sketch/outline; enter upon;
The meanings fit well with the position in the text (first word)...
Just another hypothesis...
I found in Capelli book (page 171) an abbreviation that looks very similar. If you read it as "inchacon" or "inchaton" it can be the abbreviation for "inchoacione" or "inchoatione".
Based on Latin dictionary it means:
inchoo, inchoare, inchoavi, inchoatus=
begin/start (work); set going, establish; draft/sketch/outline; enter upon;
The meanings fit well with the position in the text (first word)...
Just another hypothesis...