{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>