Apostrophe The apostrophe, while not considered part of the English alphabet, is used to abbreviate English words.

His shirts were all initialled, C, O, apostrophe H.

So in this example, this apostrophe is okay it's a single quotation (') but it's okay because the interpreter will know that,

So it knows that this whole thing is a string and it also knows that this apostrophe is just a character.

These consist of the first and last letters of the keywords with an apostrophe between them, such as W'R for WHENEVER and D'N for DIMENSION.

There are, however, a number of punctuation marks that still cause frustration and confusion such as where to put an apostrophe or how to use a semi colon.