Ancient masters taught their posterity in different issues; for instance, perceive aurally and visually, contemplate mindfully, do not pay attention only to the first look, do not cook medicine from things which are not tree roots, do not take non-relatives as siblings, etc.
Other notes:
It is a Tai Lü manuscript folded and bound at the top margin of the paper, being flipped up vertically to be written or read in the Tai Lü script.
At the end of the manuscript, there is a Khlong Si (a kind of poetry) explaining the positions of auspice and adversity in response to weekdays and a consolation verse.