src/Pure/General/markup.ML

   val kindN: string
   val internalK: string
   val property_internal: property
   val lineN: string
   val columnN: string
+  val offsetN: string
   val end_lineN: string
   val end_columnN: string
+  val end_offsetN: string
   val fileN: string
   val position_properties': string list
   val position_properties: string list
   val positionN: string val position: T
   val locationN: string val location: T

 
 (* position *)
 
 val lineN = "line";
 val columnN = "column";
+val offsetN = "offset";
 val end_lineN = "end_line";
 val end_columnN = "end_column";
+val end_offsetN = "end_offset";
 val fileN = "file";
 val idN = "id";
 
-val position_properties' = [end_lineN, end_columnN, fileN, idN];
-val position_properties = [lineN, columnN] @ position_properties';
+val position_properties' = [end_lineN, end_columnN, end_offsetN, fileN, idN];
+val position_properties = [lineN, columnN, offsetN] @ position_properties';
 
 val (positionN, position) = markup_elem "position";
 
 val (locationN, location) = markup_elem "location";