{underscore <textwheel1|inline>}, {asterisk <textwheel1|inline>}, {one two <textwheel1|inline>}, {three four <textwheel1|inline>}, {a <textwheel1|inline>}, {b <textwheel1|inline>}

{{strong <textwheel1|inline>}} and {em <textwheel1|inline>} and {{strong <textwheel1|inline>}} and {em <textwheel1|inline>}

{line <textwheel1|inline>
line <textwheel1|inline>
line <textwheel1|inline>}


an empty emphasis {} {{}} is not an emphasis

{mixed {{double and <textwheel1|inline>} single asterisk <textwheel1|inline>}} spans <textwheel1|inline>