sets debugging flags.
tells a2p that this awk script is always invoked with this `-F' switch.
specifies the names of the input fields if input does not have to be split into an array. If you were translating an awk script that processes the password file, you might say:
a2p -7 -nlogin.password.uid.gid.gcos.shell.home
Any delimiter can be used to separate the field names.
causes a2p to assume that input will always have that many fields.