 					"{v}
 			'''
 			expect: [
-				['instruction', [1, 1], 'for',
+				['instruction', [1, Number], 'for',
 					[['Symbol', 'v'], ['Symbol', 'x']]
-					[['text', [2, 2], undefined, [
+					[['text', [2, Number], undefined, [
 						[['Symbol', 'v']]
 					]]]
 				]

		'element with attributes in one line':
			input: "input @required @type='email'"
			expect: [
				['element', [1, 1], ['input', [], undefined], undefined, [
					['attribute', [1, 19], 'required', undefined]
					['attribute', [1, 19], 'type', '=', ['String', 'email']]
				]]
			]
			# should be [1, 7] and [1, 17]

		'comment single line':
			input: '! comment line'
			expect: [
				['comment', [1, Number], ['comment line']]
			]
		'comment multiple lines':
			input: '''
