# Subscripts are labels as often as they are numbers

A subscript can mark an index, a state, or a version: a₁, xₙ, Vₘₐₓ. It does not automatically mean “make everything small.” In many expressions, the operator and main variable stay on the baseline while one short label drops below it.

Unicode handles digits and a useful subset of letters, so short indices travel well through plain-text fields. The subscript generator converts only supported characters and preserves the rest. That behavior is important: an unchanged letter is more honest than a similar-looking symbol from another alphabet.

When the expression becomes long or nested, stop forcing it into Unicode. A real equation editor will be clearer. Unicode shines in labels, notes, chats, and small bits of notation that need to be pasted quickly.