On each save of a component validation is performed. Menu links to pages are always synchronized.
External links (not under the control of the CMS) are scanned using http://validator.w3.org/
The CMS automatically handles SEO requirements such as sitemaps and permanent redirects when a page is renamed.
See the full list here.
The standard article editor includes find/replace and search options. We use TinyMCE for the editor, any of the TinyMCE buttons can be enabled.
The default image editor used in TinyMCE
The page meta data can be set in the configuration tab for each page. All elements in the "head" element will be copied to the generated page head section.
The image meta data can be set in the "Appearance" and "Advanced" tabs of the image editor.