Use superscript formatting for exponents or footnotes
Use subscript formatting for chemical formulas or indices
Use a smaller font size if your editor allows it
Use Unicode superscript characters like ¹ ² ³ when available
Use Unicode subscript characters like ₀ ₁ ₂ when available
Use HTML tags like `` and `` in supported environments
Use keyboard shortcuts for superscript or subscript in word processors
Use equation or math mode in document editors
Use special character menus to insert small-number symbols
Use plain text notation like `x^2` or `H2O` when formatting is not available