A discussion about punctuation marks is like opening the Pandora`s Box. Out come the full stop (.), the comma (,), the semi colon (;), the colon (), the question mark ...

Apostrophes are used for two main jobs, showing possession and showing omission. When the noun is plural and already ends in 's', move the apostrophe to the end, like this. students' behaviour or ...

In 2017, an anonymous vigilante spent their nights travelling round the streets of Bristol with their self-made 'apostrophiser'. Their mission: to correct the city’s poorly punctuated signs.