To consider as part of something; to comprehend.
To use a directive that allows the use of source code from another file.
To bring into a group, class, set, or total as a (new) part or member.
A piece of source code or other content that is dynamically retrieved for inclusion in another item.
To grasp the essential meaning of what a person is saying, to understand a person's argument and point of view.
To agree with what a person says, to be persuaded by their arguments.