plain text

# h1

## h2

### h3

#### h4

##### h5

###### h6

em tag content before and after empty em tags before and after em tags containing whitespace before
and after em tags containing whitespace double em tags

double em tags in p tag

a em with leading and trailing whitespace a em with extra leading and trailing whitespace strong tag content before and after empty strong tags before and after strong tags containing whitespace before
and after strong tags containing whitespace double strong tags

double strong tags in p tag

before double strong tags containing whitespace after a strong with leading and trailing whitespace a strong with extra leading and trailing whitespace b tag content i tag content br tags become double space followed by newline
before hr

after hr
section 1
section 2