Hello

This is a great format

Great news

Once upon a time

Too much

skjadhsjkdh

Caution

Caution.

Warning

Warning.

Warning

Warning.

Tip

Tip.

Note	Optional Title This is an example single-paragraph note.

Optional Title

*Listing* Block

Use: code or file listings

Optional Title

# *Source* block
# Use: highlight code listings
# (require `source-highlight` or `pygmentize`)
use DBI;
my $dbh = DBI->connect('...',$u,$p)
    or die "connect: $dbh->errstr";

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