HTML RESULT

[{echo 'a' in ('a', 'b')}] [{echo 'x' in ('a', 'b')}]
[1] []

[{echo 3 in (1, 2, 3)}]
[1]

[{echo 'x' not in ('a', 'b')}]
[1]

[{echo 5 + 1 in (6, 7)}]
[1]

[{echo not 'a' in ('a', 'b')}]
[]

HTML	RESULT
`[{echo 'a' in ('a', 'b')}] [{echo 'x' in ('a', 'b')}]`	`[1] []`
`[{echo 3 in (1, 2, 3)}]`	`[1]`
`[{echo 'x' not in ('a', 'b')}]`	`[1]`
`[{echo 5 + 1 in (6, 7)}]`	`[1]`
`[{echo not 'a' in ('a', 'b')}]`	`[]`