/text/scalc/guide/multitables.xhp sheets; inserting inserting; sheets sheets; selecting multiple appending sheets selecting;multiple sheets multiple sheets calculating;multiple sheets MW moved "sheets;simultaneous.." to edit_multitables.xhp, transferred 2 entries from there and added "calculating;" Applying Multiple Sheets Inserting a Sheet Choose Insert - Sheet to insert a new sheet or an existing sheet from another file. Sheet Events Opens a dialog box where you can assign macros to sheet events. Tab Color Opens a window where you can assign a color to the sheet tab. Click to select all sheets in the document. Click to deselect all sheets in the document, except the current sheet. Selecting Multiple Sheets The sheet tab of the current sheet is always visible in white in front of the other sheet tabs. The other sheet tabs are gray when they are not selected. By clicking other sheet tabs while pressing CommandCtrl you can select multiple sheets. You can use Shift+Command Ctrl+Page Up or Page Down to select multiple sheets using the keyboard. Undoing a Selection To undo the selection of a sheet, click its sheet tab again while pressing the CommandCtrl key. The sheet that is currently visible cannot be removed from the selection. Calculating Across Multiple Sheets You can refer to a range of sheets in a formula by specifying the first and last sheet of the range, for example, =SUM(Sheet1.A1:Sheet3.A1) sums up all A1 cells on Sheet1 through Sheet3.