The apostrophe presents a problem on low-resolution screens. Use only standard, easily read symbols. Avoid special characters that not everyone can display. Use standard font sets that are likely to be installed on all computers. Do not rely on punctuation marks.
Punctuation marks are the most easily misread symbols.
For instance, there is usually only a pixel or two of difference between a period and a comma. In particular, avoid colons and semicolons. To test the vulnerability of the text, remove all punctuation and see whether readers can still decipher its meaning. If readers cannot decipher the meaning, rewrite the text so the meaning does not depend on a single punctuation mark. All rights reserved.