// Create an array  a = new Array();    // Fill the array a with all lines (with returns) in the document.  document.selection.StartOfDocument();  for( ; ; ){      y = document.selection.GetActivePointY( eePosLogical );      document.selection.SelectLine();      sLine = document.selection.Text;      if( sLine == "" ) {   // Reached the end of document, escape from the loop          break;      }      a.push( sLine );      document.selection.Collapse();      if( document.selection.GetActivePointY( eePosLogical ) == y ) {          // Reached the end of document (the last line without return), escape from the loop          break;      }  }    // Delete duplicate elements.  for( i = 0; i < a.length; i++ ){      sLine = a[i];      for( j = i + 1; j < a.length; j++ ){          if( sLine == a[j] ){              a.splice( j, 1 );              j--;          }      }  }    // Replace the entire document with new elements  document.selection.SelectAll();  document.selection.Text = a.join( "" );