DocumentationMathematicaFront EndMenu CommandsFormat Menu
Text Alignment assigns the specified text alignment to the selected cell.
Alignment can be at any point along the width of each line of text, specified by a percentage: 25% is roughly in between left-aligned and centered, while 75% is roughly in between centered and right-aligned. Other alignment points can be specified using the Option Inspector.
The commands in this submenu set the option TextAlignment on the selected cell object(s) or on text within a cell.