This manuscript deals with qira'at (a variant of how to read the Qur'an based on a valid transmission). The text was written by Shaykh Ibn Amr al-Dani.
Other notes:
This text was commented on by Shaykh Mahfuzh Tremas in Makkah. The title of his commentary on the "al-Taisir" is "Tanwir al-Shadr fi Qira'ah Ibn Amr."