Fortran 77 Warning Options:
  accept-type [no]: ACCEPT and TYPE I/O statements
  array-bounds [yes]: array bounds expressions
  assignment-stmt [no]: assignment involving array
  attribute-based-decl [no]: attribute-based (:: -style) variable declaration
  automatic-array [yes]: local array of variable size
  backslash [no]: Unix backslash escape in strings
  byte [no]: BYTE data type
  case-construct [no]: CASE construct
  character [no]: Character variable defined length <= 0
  common-subprog-name [no]: Common block & subprog with same name
  construct-name [no]: Construct names on DO statements
  continuation [no]: More than 19 continuation lines
  cpp [no]: Unix C preprocessor directives
  cray-pointer [no]: Cray pointer syntax
  cycle-exit [no]: CYCLE or EXIT statement
  d-comment [no]: Debug comments starting with D
  dec-tab [no]: DEC Fortran tab-formatted source
  do-enddo [no]: DO loop extensions
  double-complex [no]: Double complex datatype
  format-dollarsign [yes]: $ control code in FORMAT
  format-edit-descr [yes]: Nonstandard edit descriptors
  function-noparen [no]: FUNCTION defined without parens
  implicit-none [no]: IMPLICIT NONE statement
  include [no]: INCLUDE statement
  initializer [no]: Variable initializer in declaration
  inline-comment [no]: Inline comments starting with !
  internal-list-io [no]: List-directed I/O to internal file
  intrinsic [no]: Nonstandard intrinsic functions
  io-keywords [no]: Nonstandard I/O keywords
  long-line [no]: Statements with code past 72 columns
  long-name [no]: Identifiers over 6 chars
  mixed-common [no]: Mixed char and nonchar data in common
  mixed-expr [no]: Incompatible type combinations in exprs
  name-dollarsign [no]: $ or other nonalnum (except _) in identifiers
  name-underscore [no]: Underscores in identifiers
  namelist [no]: NAMELIST statement
  param-implicit-type [no]: implicit typing of PARAMETERs
  param-intrinsic [no]: Intrinsics and **real in PARAMETER defns
  param-noparen [no]: PARAMETER statement without parens
  pointer [no]: Fortran 90 pointer syntax
  quad-constant [no]: Quad precision constants like 1.23Q4
  quotemark [no]: Strings delimited by "quote marks"
  relops [no]: Relational operators < <= == /= > >=
  semicolon [no]: Semicolon as statement separator
  statement-order [no]: Statement out of order
  typeless-constant [no]: Typeless constants like Z'19AF'
  type-size [no]: Sized type declarations like REAL*8
  variable-format [no]: Variable format repeat spec or field size
  vms-io [no]: Nonstandard I/O keywords
Prefix option name with no- to turn off option
If no options given, equivalent to /f77=all
Special keywords:
  help: Print this list
  all: Set all options
  none: Clear all options