Low Level Decoding

Modules
group	Error correction functions
	Helper functions to decode sliced VBI data.
group	Teletext IDL packet demultiplexer
	Functions to decode data transmissions in Teletext Independent Data Line packets (EN 300 708 section 6).
group	Teletext Page Function Clear demultiplexer
	Separating data transmitted in Page Function Clear Teletext packets (ETS 300 708 section 4).
group	Video Programming System Decoder
	Functions to decode VPS packets (ETS 300 231).
group	Extended Data Service (XDS) demultiplexer
	Separating XDS data from a Closed Caption stream (EIA 608).

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