Review Tab

Proofing

Spelling - (F7)
Research - Toggles the display of the Research task pane.
Thesaurus - (Shift + F7). Toggles the display of the Research task pane defaulting the research service to the thesaurus.

Accessibility

This group was added in ?

Insights

This group was added in ?

Language

This group was added in 2010.

Translate - (Moved in 2010). Translate the selected text into a different language.
Language - (Moved in 2010). Change the language used to check the spelling and grammar.

Comments

New Comment - (Shift + F2). Inserts a comment at the current selection.
Edit Comment - Edit the selected comment.
Delete - Button with Drop-Down. The button deletes the selected comment. The drop-down displays the commands: Delete, Delete All Markup on the Current Slide and Delete All Makrup in this Presentation.
Previous - Goes to the previous comment on the active worksheet/workbook.
Next - Goes to the next comment on the active worksheet/workbook.
Show Comments - Displays comments and other annotations. Previously Show Markup.

Compare

This group was added in 2010.

Compare - (Added in 2010).
Accept - (Added in 2010).
Reject - (Added in 2010).
Previous - (Added in 2010).
Next - (Added in 2010).
Reviewing Pane - (Added in 2010).
End Review - (Added in 2010).

Ink

Start Inking - (Added in 2013)
Hide Ink -

OneNote

Linked Notes - (Added in 2013)

Protect

This group was removed in 2010
Protect Presentation - Drop-Down.