MasterPress 1.3.1 is a compatibility release for PHP 8 and WordPress 5.7. It still remains backwards compatible with older PHP versions.
WOOF_Post :: col()
Returns a woof-postcol object to provide an API for the column expressions used in the “Columns” section of the Create / Edit Post Type screen in MasterPress.
This is accessed through a “col” property in the expression, as shown below