From: ol.sc
+The current bitmap working copy is converted to a GEOS compacted bitmap. This
+format is used by several GEOS functions (i.e. 'BitmapUp') and is described
+in 'The Official GEOS Programmers Reference Guide', chapter 4, section
+'Bit-Mapped Graphics'.
+
@@ -285,8 +290,8 @@ assembler format. There are several attributes for this output format:
prefixed by '$'. For base 10, there is no prefix.