HTML is a markup language that uses tags to describe data. Topics: Syntax, HTML, HEAD, TITLE, LINK, META and BODY elements, Alternative stylesheets, character encoding.
With this module you can crop images when you upload them.
With Content-Aware Move tool you can move area and in fill the hole that it leaves behind. It will also merge the moved area to the new position.
Embed combines include and extends tags. It includes the template but also allows block overrides.
Include, require, include_once, require_once.
Content-Aware Crop fills in the edges of a cropped and rotated image.
Template inheritance allows you to define blocks in base template that child templates can override.
Linkit module provides autocomplete interface for internal and external linking inside wysiwyg editors. Instead of copy/pasting links to resources you can search them with the interface.