In MS Word, Ctrl + = key is used for

In word processing, character formatting features allow you to place text slightly above or below the standard text baseline.Subscript: This feature types very small letters just below the line of text. It is heavily used in mathematical indexing and chemical formulas (for example, writing H2O or CO2). The default Microsoft Word shortcut to trigger this is Ctrl + =.How to use it: You can either select the specific character (like the '2' in H2O) and press Ctrl + =, or press Ctrl + = to start typing in subscript mode and press the same shortcut again to resume normal typing.