To insert a manual line break in a cell, click in the cell, and then press Ctrl + Enter

`Ctrl` + `⤶ Enter`

All hotkeys for LibreOffice Calc

General Fill a selected cell range with the formula that you entered on the Input line	`Alt` + `⤶ Enter`
General Apply the cell format of the input cell to the entire cell range	`Alt` + `↑ Shift` + `⤶ Enter`
General Create a matrix in which all the cells contain the same information. Components of the matrix cannot be edited	`↑ Shift` + `Ctrl` + `⤶ Enter`
General To select multiple sheets in a spreadsheet, hold down Ctrl, and then click the name tabs at the lower edge of the workspace.	`Ctrl`
General To select only one sheet in a selection, hold down Shift, and then click the name tab of the sheet	`↑ Shift`
General To insert a manual line break in a cell, click in the cell, and then press Ctrl + Enter	`Ctrl` + `⤶ Enter`
General Delete the contents of selected cells	`⬅ Backspace`
Using the pivot table Removes the current field from the area	`Del`
Using the pivot table Moves the current field to the first place	`Ctrl` + `Home`
Using the pivot table Moves the current field to the last place	`Ctrl` + `End`
Using the pivot table Selects the first item in the current dialog area	`Home`
Using the pivot table Selects the last item in the current dialog area	`End`
Navigating Selects cells from the current cell to the first cell of the current row	`↑ Shift` + `Home`
Navigating Selects cells from the current cell to the last cell of the current row	`↑ Shift` + `End`
Navigating Selects cells from the current cell up to one page in the current column or extends the existing selection one page up	`Shift` + `Page Up`
Navigating Selects cells from the current cell down to one page in the current column or extends the existing selection one page down	`Shift` + `Page Down`
Using the pivot table Moves the current field one place to the left	`Ctrl` + `←`
Using the pivot table Moves the current field one place to the right	`Ctrl` + `→`
Using the pivot table Moves the current field up one place	`Ctrl` + `↑`
Using the pivot table Moves the current field down one place	`Ctrl` + `↓`
Navigating Selects all cells containing data from the current cell to the end of the continuous range of data cells, in the direction of the arrow pressed. If used to select rows and columns together, a rectangular cell range is selected	`Ctrl` + `↑ Shift` + `← ↑ → ↓`
Navigating In the print preview: Moves to the previous print page	`Ctrl` + `Page Up`
Navigating In the print preview: Moves to the next print page	`Ctrl` + `Page Down`
Navigating Moves one screen to the left	`Alt` + `Page Up`
Navigating Moves one screen page to the right	`Alt` + `Page Down`
Navigating Adds the previous sheet to the current selection of sheets. If all the sheets in a spreadsheet are selected, this shortcut key combination only selects the previous sheet. Makes the previous sheet the current sheet	`Shift` + `Ctrl` + `Page Up`
Navigating Adds the next sheet to the current selection of sheets. If all the sheets in a spreadsheet are selected, this shortcut key combination only selects the next sheet. Makes the next sheet the current sheet	`Shift` + `Ctrl` + `Page Down`
Navigating Selects the data range that contains the cursor. A range is a contiguous cell range that contains data and is bounded by empty row and columns	`Ctrl` + `*`
Navigating Selects the matrix formula range that contains the cursor	`Ctrl` + `/`
Navigating Insert cells (as in menu Insert - Cells)	`Ctrl` + `+`
Navigating Delete cells (as in menu Edit - Delete Cells)	`Ctrl` + `-`
Navigating (in a selected range) Moves the cursor down one cell in a selected range. To specify the direction that the cursor moves, choose Tools - Options' - LibreOffice Calc - General'	`⤶ Enter`
Navigating Displays or hides the formulas instead of the values in all cells (see note below this table)	`Ctrl` + `
Function keys Displays the comment that is attached to the current cell	`Ctrl` + `F1`
Function keys If the cursor is in an input box in a dialog that has a Minimize button, the dialog is hidden and the input box remains visible. Press F2 again to show the whole dialog	`F2`
Function keys Opens the Function Wizard	`Ctrl` + `F2`
Function keys Moves the cursor to the Input line where you can enter a formula for the current cell	`↑ Shift` + `Ctrl` + `F2`
Function keys Opens the Define Names dialog	`Ctrl` + `F3`
Function keys Shows or Hides the Database explorer	`↑ Shift` + `Ctrl` + `F4`
Function keys Rearranges the relative or absolute references (for example, A1, $A$1, $A1, A$1) in the input field	`F4`
Function keys Shows or hides the Navigator	`F5`
Function keys Traces dependents	`↑ Shift` + `F5`
Function keys Traces precedents	`↑ Shift` + `F7`
Function keys Moves the cursor from the Input line to the Sheet area box	`↑ Shift` + `Ctrl` + `F5`
Function keys Checks spelling in the current sheet	`F7`
Function keys Opens the Thesaurus if the current cell contains text	`Ctrl` + `F7`
Function keys Turns additional selection mode on or off. In this mode, you can use the arrow keys to extend the selection. You can also click in another cell to extend the selection	`F8`
Function keys Highlights cells containing values	`Ctrl` + `F8`
Function keys Recalculates changed formulas in the current sheet	`F9`
Function keys Recalculates all formulas in all sheets	`Ctrl` + `↑ Shift` + `F9`
Function keys Updates the selected chart	`Ctrl` + `F9`
Function keys Opens the Styles and Formatting window where you can apply a formatting style to the contents of the cell or to the current sheet	`F11`
Function keys Creates a document template	`↑ Shift` + `F11`
Function keys Updates the templates	`↑ Shift` + `Ctrl` + `F11`
Function keys Groups the selected data range	`F12`
Function keys Ungroups the selected data range	`Ctrl` + `F12`
Function keys Increases the height of current row (only in OpenOffice.org legacy compatibility mode)	`Alt` + `↓`
Function keys Decreases the height of current row (only in OpenOffice.org legacy compatibility mode)	`Alt` + `↑`
Function keys Increases the width of the current column	`Alt` + `→`
Function keys Decreases the width of the current column	`Alt` + `←`
Function keys Optimizes the column width or row height based on the current cell	`Alt` + `↑ Shift` + `← ↑ → ↓`
Formatting cells Open Format Cells dialog	`Ctrl` + `1`
Formatting cells Two decimal places, thousands separator	`Ctrl` + `↑ Shift` + `1`
Formatting cells Standard exponential format	`Ctrl` + `↑ Shift` + `2`
Formatting cells Standard date format	`Ctrl` + `↑ Shift` + `3`
Formatting cells Standard currency format	`Ctrl` + `↑ Shift` + `4`
Formatting cells Standard percentage format (two decimal places)	`Ctrl` + `↑ Shift` + `5`
Formatting cells Standard format	`Ctrl` + `↑ Shift` + `6`
Using the pivot table Changes the focus by moving forwards through the areas and buttons of the dialog	`⭾ Tab`
Using the pivot table Changes the focus by moving backwards through the areas and buttons of the dialog	`↑ Shift` + `⭾ Tab`
Using the pivot table Moves the focus up one item in the current dialog area	`↑`
Using the pivot table Moves the focus down one item in the current dialog area	`↓`
Using the pivot table Moves the focus one item to the left in the current dialog area	`←`
Using the pivot table Moves the focus one item to the right in the current dialog area	`→`
Using the pivot table and the underlined character in the word "Data" Copies or moves the current field into the "Data" area	`Alt`
Using the pivot table Displays the options for the current field	`Alt` + `O`