Boox Color Series User Manual page 94

Template
It includes built-in templates, local templates（PDF\PNG format） and the
Cloud templates.
The directory of the local templates is Storage\note Template.
The directory of the templates downloaded from the Cloud is
Storag\noteTemplate\cloud.
The built-in templates will be used if the local template are deleted.
The template can be set to scale proportionally, splice original images, and
stretch to fit the canvas size;
You are recommended to write after the template style is determined to
avoid changes in the template after writing, which cannot correspond to
the original position of the template;