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| workbook | an Excel file with one or more worksheets |
| worksheet | the work area for entering and calculating data made up of columns and rows separated by grid lines |
| cell | the intersection of a column and a row on a worksheet |
| active cell | contains the cell pointer--a dark outline around the cell |
| formula bar | as you enter data in a cell, it simultaneously appears here above the worksheet frame |
| cell reference | location of a cell identified by its column letter and row number |
| scroll | a way to view locations on the worksheet without changing the active cell |
| sheet tabs | appear at the bottom of the workbook window and displays the name of each worksheet |
| tab scrolling buttons | appear just to the left of the sheet tabs and allow you to scroll hidden tabs into view |
