-c     Execute cmd immediately  after  starting  the  edit  session.   Particularly  useful  for  initial
       positioning  in  the  file, however cmd is not limited to positioning commands.  This is the POSIX
       1003.2 interface for the historic “+cmd” syntax.  Nex/nvi supports both the old and new syntax.

-e     Start editing in ex mode, as if the command name were ex.

-l     Start editing with the lisp and showmatch options set.

-R     Start editing in read‐only mode, as if the command name was view, or the readonly option was set.

-r     Recover the specified files, or, if  no  files  are  specified,  list  the  files  that  could  be
       recovered.   If  no recoverable files by the specified name exist, the file is edited as if the -r
       option had not been specified.

-S     Run with the secure edit option set, disallowing all access to external programs.

-s     Enter batch mode; applicable only to ex edit sessions.  Batch  mode  is  useful  when  running  ex
       scripts.   Prompts,  informative  messages  and other user oriented message are turned off, and no
       startup files or environmental variables are read.  This is the POSIX  1003.2  interface  for  the
       historic “-” argument.  Nex/nvi supports both the old and new syntax.

-t     Start editing at the specified tag.  (See ctags(1)).

-w     Set the initial window size to the specified number of lines.

-v     Start editing in vi mode, as if the command name was vi or view.