The content creation and editing is done using a browser based mark up editing.  The content editor can assist you to the extent that you wish when editing or creating your content. 

You can set the level of help under the Input Format and depending on what type of content and your permissions you will see up to four choices:

1. Filtered HTML - provides a simple menu for typical editing and formatting options.
2. Full HTML - provides a menu with additional format, edit, and functionality for content creation and editing.
3. Plain Text (default) - this input format is most useful for those familiar with writing HTML and for just doing short information objects like a comment or event description.
4. Full HTML No Inline Editor - For those familiar with Full HTML functionality and does not provide a menu for choices.

Most but not all content can be edited after it has been created.