Cell numbers, alignment, or background color can be formatted through the Format Cells dialog. To format a cell, select the cells to be formatted, then click the Data | Format | Format Cells command . The Format Cells dialog opens.
The Format Cells dialog has three pages: Number, Alignment, and Background.
Use the Number page to change the way numeric data is displayed in the worksheet. This includes setting the numeric format for numbers and the date/time entries.
Use the Alignment page to set the cell alignment.
Select cell background color on the Background page.
Number formatting has no effect on a numeric text string (numbers entered as text). A number with an apostrophe in front of it ('8123) is a text string. The apostrophe only shows in the active cell edit box. For example, an ASCII data file might contain the digits "8123" (digits surrounded by quotes), '8123 (digits preceded with an apostrophe), numbers with letters, or numbers with symbols (i.e. a blackslash "\"). These "numbers" are read as text and not as a number. The Data | Data | Transform command can be used to perform a mathematical function, such as ATOI(X), to convert some text strings to integer values, such as the case wit the '8123. In other cases, the quote marks, letters, or symbols may need to be removed before using the Transform command.
The only formats that preserve cell formatting information are the Excel XLS, XLSX or SYLK SLK file formats. ASCII file formats (.CSV, .TXT, .DAT, .BNA, .BLN) do not preserve file format information.
Format Cells - Alignment
Format Cells - Background
Format Cells - Number