Unprefix: no
Unfold: no
  \\
  \
  This is not \
  a folded line

Unprefix: yes
Unfold: no
\
\
This is not \
a folded line

Unprefix: no
Unfold: yes
  \\
  \
  This is not \
  a folded line

Unprefix: yes
Unfold: yes
This is not a folded line
