The Coding toolbar contains buttons that let you perform many standard coding operations, such as collapsing and expanding code selections, highlighting invalid code, applying and removing comments, indenting code, and inserting recently used code snippets. The Coding toolbar is visible only in Code view and appears vertically on the left side of the Document window.
You cannot undock or move the Coding toolbar, but you can hide it. For more information, see Displaying toolbars.
You can also edit the Coding toolbar to display more buttons (such as Word Wrap, Show Hidden Characters, and Auto Indent), or hide buttons that you dont want to use. To do so, however, you must edit the XML file that generates the toolbar. For more information, see Extending Dreamweaver.