The SIGN clause specifies the operational sign's position and type of
  representation.

1  –  1format Data Screen

  The SIGN clause specifies the operational sign's position and type of
  representation.

  Format 1 - Data Description and Screen Description Entries

   [ SIGN IS ] { LEADING  } [ SEPARATE CHARACTER ]
               { TRAILING }

2  –  2format Report Group Description

  The SIGN clause specifies the operational sign's position and type of
  representation.

  Format 2 - Report Group Description Entries

   [ SIGN IS ] { LEADING  } SEPARATE CHARACTER
               { TRAILING }