New version highlights (4.2-4.5)
Completion requirements
3. TinyMCE Text editor

TinyMCE new default text editor
TinyMCE is now the default editor. You can change back to the previous default, Atto, in your User preferences.

TinyMCE Improved image handling
Image handling is more streamlined with TinyMCE, giving a better user experience.

TinyMCE Full screen
Improvements to TinyMCE editor include a Full screen button.
