cat <<<one
cat <<<\_two
cat <<<"\_three"
cat <<<'\_four'
cat <<<\\_two
cat <<<"\\_three"
cat <<<'\\_four'

cat <<<$'two_newlines\n'

cat <<</bin/c*

cat <<<star_*
cat <<<star_\*
cat <<<"star_*"
cat <<<"star_\*"
cat <<<'star_*'
cat <<<'star_\*'

var=$'line1
line2
	line3'

cat <<<$var

cat <<<"$var"

i=10
until test $((--i)) = 0; do
	cat <<<$((2**i))
done

a=qwerty
cat <<<`echo v'-$a-\t-\\-\"-\x-\`-\--\z-\*-\?-'`
cat <<<"`echo v'-$a-\t-\\-\"-\x-\`-\--\z-\*-\?-'`"