DISTANCE ATOMS=1,2 COMPONENTS
# comment
DISTANCE ...
   ATOMS=1,2 COMPONENTS LABEL=a __FILL__
... 
DISTANCE LABEL=a ...
   ATOMS=1,2 COMPONENTS
... 
a: ...
  DISTANCE ATOMS=1,2
  COMPONENTS
...

__FILL__

distance atoms=1,2

Distance Atoms=1,2
