noun

A punctuation mark ( ’ ) used to indicate either possession (e.g., Harry’s book; boys’ coats) or the omission of letters or numbers (e.g., can’t; he’s; class of ’99).

The playwrights’ experimental use of English (including the absence of capital letters, apostrophes, punctuation, etc.) is one way in which they resist oppression.

leaving out,exclusion,exception,non-inclusion,deletion,erasure,cut,excision,elimination,absence