Japanese can be written horizontally or vertically, and some punctuation marks adapt to this change in direction.

In Mathematics, certain problems could be written horizontally.

Chinese characters can be written horizontally or vertically.

Signs are most commonly now written in vertical columns (although formerly they were written horizontally).

Many East Asian scripts can be written horizontally or vertically.

Scientific and mathematical texts are nearly always written horizontally, since in vertical writing equations must be turned sideways, making them more difficult to read.

Mongol letters are written horizontally from left to right.

The message text can be written horizontally in the white squares and the ciphertext taken off vertically, or vice versa.

Three notes, written horizontally have been added.

The answers on the board were always written horizontally from left to right.