Actually use the same implementation than BlockCode,
this class is only used for typing purposes.
markdown :: BlockNone :: defaultinit
core :: Object :: class_factory
Implementation used byget_class to create the specific class.
			markdown :: Block :: defaultinit
markdown :: BlockNone :: defaultinit
core :: Object :: defaultinit
markdown :: Block :: emit_blocks
Emit sub-blocks contained inblock.
			self, lines or blocks.
			core :: Object :: is_same_instance
Return true ifself and other are the same instance (i.e. same identity).
			core :: Object :: is_same_serialized
Isself the same as other in a serialization context?
			core :: Object :: is_same_type
Return true ifself and other have the same dynamic type.
			core :: Object :: output_class_name
Display class name on stdout (debug only).markdown :: Block :: raw_content
The raw content of the block as a multi-line string.