This shows the use of default attributes list.
*** Parameters: ***
{}
*** Markdown input: ***
Paragraph2 
{#2}

{paragraph}: .maruku-par

*** Output of inspect ***
md_el(:document,[
	md_par(["Paragraph2"], [[:id, "2"]]),
	md_el(:ald,[],{:ald=>[[:class, "maruku-par"]],:ald_id=>"paragraph"},[])
],{},[])
*** Output of to_html ***
<p id="2" class="maruku-par">Paragraph2</p>
*** Output of to_latex ***
Paragraph2
*** Output of to_md ***
Paragraph2
*** Output of to_s ***
Paragraph2