Documentation for Confluence 5.4.
Documentation for Confluence OnDemand and earlier versions of Confluence is available too.

Title: Confluence 4 Editor - What's Changed for Wiki Markup Users  
Author: Sarah Maddox [Atlassian] Jan 18, 2011
Last Changed by: Rachel Robins [Atlassian Technical Writer] Sep 13, 2013
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Incoming Links
Confluence 3.5 (1)
    Page: Planning for Confluence 4.0
Confluence Latest (2)
    Page: Planning for Confluence 4
    Page: Confluence 4 Editor - Customer Feedback
Parent Page
    Page: Planning for Confluence 4
Global Labels (1)
Outgoing Links
External Links (1)…
Confluence Latest (5)     Page: _Images_from_Editor
    Page: Using Autocomplete
    Page: Keyboard Shortcuts
    Page: Confluence 4 Editor FAQ
    Page: Confluence Wiki Markup