$* <<EOI >>EOO  # blank-lines
cmd <<EOF
foo

bar

EOF
EOI
cmd <<EOF
foo

bar

EOF
EOO

# quote
#
# Note: they are still recognized in eval contexts.
#
$* <<EOI >>EOO
cmd <<EOF
'single'
"double"
b'o't"h"
('single' "double")
EOF
EOI
cmd <<EOF
'single'
"double"
b'o't"h"
single double
EOF
EOO