Common word processing programs such as Microsoft Word and Google Docs include a set of commands for creating blank tables, entering data in tabular format and adjusting the overall appearance of the table. The overall size of the table, in terms of the number of rows and columns, is typically constrained by the size of the printed page on which the table will appear. Word processors can also carry out simple commands such as finding the sum of all numbers in an individual column.
In all spreadsheet programs including Microsoft Excel, rows are labeled using numbers (e.g., 1 to 1,048,576). All columns are labeled with letters starting with the letter A and then incrementing by a letter after the final letter Z. For example, after the letter Z, the next column is AA, AB, AC, ..., AZ and then incrementing to BA, BB, BC, etc. all of the way to the last column XFD. When working with a cell, you combine the column with the row. For example, the very first cell is in column A and on row 1, so the cell is labeled as A1.