19th century verse on the rules of punctuation.

Sentences  start with a capital  letter,
So as to make your sentence better
Use a full stop to mark the end.
It closes every  sentence penned.
The comma is short pauses and breaks,
And also for lists the writer makes.
Dashes_like these _ are for thoughts  by the way.
They give extra information (so do brackets, we may say)
These two dots are a colon : colon pause to compare.
They  also  do this:list, explain and prepare.
The semicolon makes a break ;it's followed  by a clause.
It does the work of words that link;it's also  a short  pause.
An apostrophe shows the owner  of anyone's  things,
And it's also useful for shortening.
I'm so glad!  He is so mad!  We're having  such a lark!
To show strong feelings use an exclamation mark!
A question mark follows What?  When? Where? Why? and How?
Do you? Can I?  Shall  we? Give as your answer now!
'Question mark's enclosed with said,
Which is why they 're sometimes called' speech marks 'instead.
  Courtesy : PU 1st, English  work book.