Command_Qualifiers

/GLOBAL
  Makes the variable expression globally accessible. You cannot
  specify both the /LOCAL and /GLOBAL qualifiers with the same
  MODIFY VARIABLE command.

/LOCAL
  Makes the variable expression locally accessible. You cannot
  specify both the /LOCAL and /GLOBAL qualifiers with the same
  MODIFY VARIABLE command.

/LOG
  /LOG (D)
  /NOLOG

  Controls whether Digital Test Manager displays informational and
  success messages on your screen.

/LOGICAL
  Changes a variable from a OpenVMS symbol to a OpenVMS logical name. You
  cannot specify both the /LOGICAL and /SYMBOL qualifiers with the
  same MODIFY VARIABLE command.

/NUMERIC
  Changes a string variable of a symbol to numeric value. You cannot
  specify the /NUMERIC and /STRING qualifiers with the same MODIFY
  VARIABLE command.

/REMARK
  /REMARK="string"
  /NOREMARK

  Determines whether to replace or remove the existing remark.

  The /REMARK qualifier replaces any existing remark with the
  specified remark. The /NOREMARK qualifier removes the remark
  string from the variable, leaving the remark field value null.

/STRING
  Changes a numeric variable of a symbol to a string. You cannot
  specify the /NUMERIC and /STRING qualifiers with the same MODIFY
  VARIABLE command.

/SYMBOL
  Changes a variable from a OpenVMS logical name to a OpenVMS symbol. You
  must define variables used as symbols as either numeric or string
  variable types. You cannot specify both the /LOGICAL and /SYMBOL
  qualifiers with the same MODIFY VARIABLE command.

/VALUE
  /VALUE=value

  Changes the value of the variable. A value specified with the
  MODIFY VARIABLE command replaces any previous value for the
  variable.