Adding subscripts to Excel is usually a simple matter of a font setting, but you may run into limitations when adding subscripts to cells containing numbers or formulas.

Learn how to add superscript and subscript buttons to the toolbars in Word, PowerPoint, and Excel in both Office 2004 and 2008.

White space appears as empty area within an Excel 2003 cell and it can be created by text or formatting. ... Press "Alt-Enter" to add additional lines. ... How to Enter a Subscript in Excel.