@main[]
$t[^table::create{a	b	c
11	12	13
21	22
31
41		43
	52	53
	62
		73}]

$c[^t.columns[]]
^t.menu{
	^c.menu{${c.column}: ^if($t.fields.[$c.column] is "void"){void}{'$t.fields.[$c.column]'}}[, ]
}[<br />]