Formatting: Using Custom Styles

A cell style is a set of formatting properties (font, data style, borders, background), used to display a single cell.
Custom styles are collections of user-defined cell styles that can be used when formatting cells in a given workbook. Custom styles are stored in workbooks but unlike palette styles, a given custom style may or may not be in use by that workbook. Custom styles don't change unless you explicitly manually edit, add or delete some of them.

GS-Calc provides various options for creating, editing and managing custom styles. The related menus and commands are available either in the resizable Format > Custom Styles window or in the Format > Cell Format dialog box if the Format > Advanced Cell Format Dialog Options > Show Style Lists option is checked.