Apply or clear the Definition tag.

`ctrl` + `5`

All hotkeys for Microsoft OneNote 2010 (Windows)

Various Other OneNote Shortcuts - Manage Audio and Video in OneNote Start playback of a selected audio or video recording.	`ctrl` + `alt` + `p`
Various Other OneNote Shortcuts - Manage Audio and Video in OneNote Stop playback of a selected audio or video recording.	`ctrl` + `alt` + `s`
Various Other OneNote Shortcuts - Manage Audio and Video in OneNote Rewind the current audio or video recording by a few seconds.	`ctrl` + `alt` + `y`
Various Other OneNote Shortcuts - Manage Audio and Video in OneNote Fast-forward the current audio or video recording by a few seconds.	`ctrl` + `alt` + `u`
Various Other OneNote Shortcuts - Special language settings Set writing direction left to right.	`ctrl` +left `shift`
Various Other OneNote Shortcuts - Special language settings Set writing direction right to left.	`ctrl` +right `shift`
Various Other OneNote Shortcuts - Special language settings Increase indent by one level in right-to-left text.	`tab`
Various Other OneNote Shortcuts - Special language settings Decrease indent by one level in right-to-left text.	`shift` + `tab`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Send the selected pages in an e-mail message.	`ctrl` + `shift` + `e`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Create a Today Outlook task from the currently selected note.	`ctrl` + `shift` + `1`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Create a Tomorrow Outlook task from the currently selected note.	`ctrl` + `shift` + `2`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Create a This Week Outlook task from the currently selected note.	`ctrl` + `shift` + `3`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Create a Next Week Outlook task from the currently selected note.	`ctrl` + `shift` + `4`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Create a No Date Outlook task from the currently selected note.	`ctrl` + `shift` + `5`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Open the selected Outlook task.	`ctrl` + `shift` + `k`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Mark the selected Outlook task as complete.	`ctrl` + `shift` + `9`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Delete the selected Outlook task.	`ctrl` + `shift` + `0`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Sync changes in the current shared notebook.	`shift` + `f9`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Sync changes in all shared notebooks.	`f9`
Various Other OneNote Shortcuts - Sharing Notes with other People or Programs Mark the current page as Unread.	`ctrl` + `q`
Various Other OneNote Shortcuts - The Rest Check spelling.	`f7`
Various Other OneNote Shortcuts - The Rest Open the research pane and thesaurus for the currently selected word.	`shift` + `f7`
Various Other OneNote Shortcuts - The Rest Execute the action suggested on the Information Bar if it appears at the top of a page.	`ctrl` + `shift` + `w`
Various Other OneNote Shortcuts - The Rest Lock all password-protected sections.	`ctrl` + `alt` + `l`
Basic Editing and Formatting Undo / Redo the last action.	`ctrl` + `z` / `y`
Basic Editing and Formatting Move one character to the left / right.	`arrow left` / `arrow right`
Basic Editing and Formatting Move one word to the left / right.	`ctrl` + `arrow left` / `ctrl` + `arrow right`
Basic Editing and Formatting Move one line up /down down.	`arrow up` / `arrow down`
Basic Editing and Formatting Move to the next/ previous paragraph.	`ctrl` + `arrow down` / `ctrl` + `arrow up`
Basic Editing and Formatting Move to the beginning / end of the line.	`home` / `end`
Basic Editing and Formatting Scroll to the top/ bottom of the current page.	`ctrl` + `home` / `ctrl` + `end`
Basic Editing and Formatting Scroll up/ down in the current page.	`page up` / `page down`
Basic Editing and Formatting Delete one word to the left / right.	`ctrl` + `backspace` / `ctrl` + `delete`
Basic Editing and Formatting Cut/ Copy/ Paste the selected text or item.	`ctrl` + `x` / `ctrl` + `c` / `ctrl` + `v`
Basic Editing and Formatting Apply or remove bold formatting from the selected text.	`ctrl` + `b`
Basic Editing and Formatting Apply or remove italic formatting from the selected text.	`ctrl` + `i`
Basic Editing and Formatting Apply or remove the underline from the selected text.	`ctrl` + `u`
Basic Editing and Formatting Select all items on the current page.	`ctrl` + `a`
Basic Editing and Formatting Select to the beginning / end of the line.	`shift` + `home` / `shift` + `end`
Basic Editing and Formatting Select the whole line (when the cursor is at the beginning of the line).	`shift` + `arrow down`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Copy / Paste the formatting of selected text (new in Outlook 2010)	`ctrl` + `shift` + `c` / `ctrl` + `shift` + `v`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Highlight selected text in yellow.	`ctrl` + `shift` + `h` or `ctrl` + `alt` + `h`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Apply or remove strikethrough from the selected text.	`ctrl` + `-`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Apply or remove superscript formatting from the selected text.	`ctrl` + `shift` + `=`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Apply or remove subscript formatting from the selected text.	`ctrl` + `=`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Apply or remove bulleted list formatting from the selected paragraph.	`ctrl` + `.` (Period)
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Apply or remove numbered list formatting from the selected paragraph.	`ctrl` + `/`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Apply a Heading 1 - 6 style to the current note.	`ctrl` + `alt` + `1` ... `ctrl` + `alt` + `6`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Apply the Normal style to the current note.	`ctrl` + `shift` + `n`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Indent a paragraph to the right / remove indent.	`alt` + `shift` + `arrow right` / `arrow left`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Right-align / left-align the selected paragraph.	`ctrl` + `r` / `ctrl` + `l`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Increase / decrease the font size of selected text.	`ctrl` + `shift` + `;` / `ctrl` + `shift` + `;`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Clear all formatting applied to the selected text.	`ctrl` + `shift` + `n`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Bring up the context menu for any note, tab, or any other object that currently has focus (Simluate right mouse-button).	`shift` + `f10`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Insert a hyperlink.	`ctrl` + `k`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Open a hyperlink. The cursor must be placed anywhere within the formatted hyperlink text.	`enter`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Jump to the title of the page and select it.	`ctrl` + `shift` + `t`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Cancel the selected outline or page.	`esc`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Move the current paragraph or several selected paragraphs up / down.	`alt` + `shift` + `arrow up` / `alt` + `shift` + `arrow down`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Move the current paragraph or several selected paragraphs left / right (decreasing/ increasing the the indent).	`alt` + `shift` + `arrow left` / `alt` + `shift` + `arrow right`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Select the current paragraph and its subordinate paragraphs.	`ctrl` + `shift` + `-`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Insert a line break without starting a new paragraph.	`shift` + `enter`
Specific OneNote Shortcuts for Selecting, Editing, and Formatting Select all items on the current page. Press ctrl+a more than once to increase the scope of the selection.	`ctrl` + `a`
Work with the OneNote Window(s) Show or hide the Ribbon.	`ctrl` + `f1`
Work with the OneNote Window(s) Show or hide the Navigation Bar.	`alt` + `f1`
Work with the OneNote Window(s) Open a small OneNote window to create a side note.	`ctrl` + `shift` + `m`
Work with the OneNote Window(s) Turn full-screen view on or off.	`f11`
Work with the OneNote Window(s) Dock/ Undock OneNote program window to Desktop.	`ctrl` + `alt` + `d`
Work with the OneNote Window(s) Open a new OneNote window / replicate window.	`ctrl` + `m`
Work with the OneNote Window(s) Create a new side note.	`win` + `n`
Work with the OneNote Window(s) Open a new OneNote window.	`ctrl` + `m`
Managing Pages, Notebooks and Sections Show or hide rule lines on the current page.	`ctrl` + `shift` + `r`
Managing Pages, Notebooks and Sections Go back to the last page / forward to the next page visited.	`alt` + `arrow left` / `alt` + `arrow right`
Managing Pages, Notebooks and Sections Go to the next / previous section.	`ctrl` + `tab` / `ctrl` + `shift` + `tab`
Managing Pages, Notebooks and Sections Go to the next / previous page in the section.	`ctrl` + `page down` / `ctrl` + `page up`
Managing Pages, Notebooks and Sections Go to the first / last page in the section.	`alt` + `home` / `alt` + `end`
Managing Pages, Notebooks and Sections Go to the first / last page in the currently visible set of page tabs.	`alt` + `page up` / `alt` + `page down`
Managing Pages, Notebooks and Sections Create a new section.	`ctrl` + `t`
Managing Pages, Notebooks and Sections Open a notebook.	`ctrl` + `o`
Managing Pages, Notebooks and Sections Open a section.	`ctrl` + `alt` + `shift` + `o`
Managing Pages, Notebooks and Sections Move or copy the current page.	`ctrl` + `alt` + `m`
Managing Pages, Notebooks and Sections Put focus on the current page tab.	`ctrl` + `alt` + `g`
Managing Pages, Notebooks and Sections Select the current page tab.	`ctrl` + `shift` + `a`
Managing Pages, Notebooks and Sections Put focus on the current section tab.	`ctrl` + `shift` + `g`
Managing Pages, Notebooks and Sections Move the current section.	`ctrl` + `shift` + `g` , `shift` + `f10` , `m`
Managing Pages, Notebooks and Sections Switch to a different notebook on the Navigation bar.	`ctrl` + `g` , then press `arrow down` or `arrow up` to select, then `enter`
Creating and Manipulating OneNote Tables Create a table by adding a second column to already typed text.Create another column in a table with a single row.	`tab`
Creating and Manipulating OneNote Tables Create another row when at the end cell of a table. Press ENTER a second time to finish the table.	`enter`
Creating and Manipulating OneNote Tables Create a row below the current row in a table.	`ctrl` + `enter`
Creating and Manipulating OneNote Tables Create another paragraph in the same cell in a table.	`alt` + `enter`
Creating and Manipulating OneNote Tables Create a column to the right of the current column in a table.	`ctrl` + `alt` + `r`
Creating and Manipulating OneNote Tables Create a column to the left of the current column in a table.	`ctrl` + `alt` + `e`
Creating and Manipulating OneNote Tables Create a row above the current one in a table (when the cursor is at the beginning of any row).	`enter`
Creating and Manipulating OneNote Tables Delete the current empty row in a table (when the cursor is at the beginning of the row).	press `del` twice
Adding Items to a Page Insert the current date.	`alt` + `shift` + `d`
Adding Items to a Page Insert the current date and time.	`alt` + `shift` + `f`
Adding Items to a Page Insert the current time.	`alt` + `shift` + `t`
Adding Items to a Page Insert a document or file on the current page.	`alt` + `n` , `f`
Adding Items to a Page Insert a document or file as a printout on the current page.	`alt` + `n` , `o`
Adding Items to a Page Show or hide document printouts on the current page (when running OneNote in High Contrast mode).	`alt` + `shift` + `p`
Adding Items to a Page Insert a picture from a file.	`alt` + `n` , `p`
Adding Items to a Page Insert a picture from a scanner or a camera.	`alt` + `n` , `s`
Adding Items to a Page Insert a screen clipping. The OneNote icon must be active in the notification area on the Windows taskbar.	`win` + `s`
Adding Items to a Page Insert a line break.	`shift` + `enter`
Working with Outlines Show through Level 1 - 9.	`alt` + `shift` + `1` ... `9`
Working with Outlines Expand all levels.	`alt` + `shift` + `0`
Working with Outlines Increase / decrease indent by one level.	`tab` / `shift` + `tab`
Working with Outlines Expand a collapsed outline.	`alt` + `shift` + `+`
Working with Outlines Collapse an expanded outline.	`alt` + `shift` + `-`
Working with and inside Pages / Side Notes Expand or collapse the subordinate tabs of a page group.	`ctrl` + `shift` + `*`
Working with and inside Pages / Side Notes Print the current page.	`ctrl` + `p`
Working with and inside Pages / Side Notes Add a new page at the end of the selected section.	`ctrl` + `n`
Working with and inside Pages / Side Notes Increase / Decrease the width of the page tabs bar.	`ctrl` + `shift` + `[` / `ctrl` + `shift` + `]`
Working with and inside Pages / Side Notes Decrease / Increase indent level of the current page tab label.	`ctrl` + `alt` + `[` / `ctrl` + `alt` + `]`
Working with and inside Pages / Side Notes Create a new page below the current page tab at the same level.	`ctrl` + `alt` + `n`
Working with and inside Pages / Side Notes Create a new subpage below the current page.	`ctrl` + `shift` + `alt` + `n`
Working with and inside Pages / Side Notes Select the current page. (If the selected page is part of a group, press ctrl+a to select all of the pages in the group.)	`ctrl` + `shift` + `a`
Working with and inside Pages / Side Notes Move the insertion point to the page title.	`ctrl` + `shift` + `t`
Working with and inside Pages / Side Notes Zoom in.	`alt` + `ctrl` + `+` on the numeric keyp or `alt` + `ctrl` + `shift` + `+`
Working with and inside Pages / Side Notes Zoom out.	`alt` + `ctrl` + `-` on the numeric keypad or `alt` + `ctrl` + `shift` + `-`
Working with and inside Pages / Side Notes Move the insertion point up / down in the current page, or expand the page up.	`ctrl` + `alt` + `arrow up` / `ctrl` + `alt` + `arrow down`
Working with and inside Pages / Side Notes Move the insertion point left / right in the current page, or expand the page to the left / right.	`ctrl` + `alt` + `arrow left` / `ctrl` + `alt` + `arrow right`
Working with and inside Pages / Side Notes Go to the next note container.	`alt` + `arrow down`
Tagging Notes Apply, mark, or clear the To Do tag.	`ctrl` + `1`
Tagging Notes Apply or clear the Important tag.	`ctrl` + `2`
Tagging Notes Apply or clear the Question tag.	`ctrl` + `3`
Tagging Notes Apply or clear the Remember for later tag.	`ctrl` + `4`
Tagging Notes Apply or clear the Definition tag.	`ctrl` + `5`
Tagging Notes Apply or clear a custom tag.	`ctrl` + `6` ... `ctrl` + `9`
Tagging Notes Remove all note tags from the selected notes.	`ctrl` + `0`
Searching Notes Move the insertion point to the Search box to search all notebooks.	`ctrl` + `e`
Searching Notes While searching all notebooks, preview the next result.	`arrow down`
Searching Notes While searching all notebooks, go to the selected result and dismiss Search.	`enter`
Searching Notes Change the search scope.	`ctrl` + `e` , `tab` , `space`
Searching Notes Open the Search Results pane.	`alt` + `o` after searching
Searching Notes Search only the current page. You can switch between searching everywhere and searching only the current page at any point by pressing CRTL+E or CTRL+F.	`ctrl` + `f`
Searching Notes While searching the current page, move to the next result.	`enter` or `f3`
Searching Notes While searching the current page, move to the previous result.	`shift` + `f3`
Searching Notes Dismiss Search and return to the page.	`esc`