RECOMMENDATION ITU-R BT.1117-2 … STUDIO FORMAT PARAMETERS FOR ENHANCED 16:9 ASPECT RATIO 625-LINE TELEVISION SYSTEMS (D- AND 
ANNEX 1 … Techniques and modules for programmes produced for enhanced 16:9 625-line systems
1 Use of conventional 625-line production systems
    1.1 Video signal format
    1.2 Adjustments to conventional production equipment
2 Down conversion from HDTV sources
3 Improved film production methods
ANNEX 2 … The Com system: a PAL-compatible digital component coding system
1 Introduction
2 Basic form of signal
3 Pre- and post-filters for luminance and chrominance
4 Luminance sub-band splitter filters
5 Sub-band filters for combining chrominance and high-frequency luminance
6 Weston PAL assembler and splitter filters
7 Compensating delays
8 DAC post-filter
APPENDIX 1 TO ANNEX 2 … A European Broadcasting Union (EBU)   evaluation of the Comsystem
1 Introduction
2 The Com system
3 The experimental arrangement
    3.1 Test sequences
4 The specialist evaluation
    4.1 Behaviour of Com with a flat channel (greater than 9 MHz)
    4.2 Behaviour of Comwith a non-flat channel
    4.3 Behaviour of Comwith a 5.5 MHz channel bandwidth
    4.4 Behaviour of Comwith an intermediate channel bandwidth
    4.5 Behaviour of Comwith phase distortions in the channel
    4.6 Behaviour of Comfor multi-generation recording
    4.7 Mixing of Comand conventional PAL
5 Conclusions
ANNEX 3
1 Introduction
2 Wide-screen production concepts
    2.1 Aspect ratio
    2.2 Resolution
    2.3 Studio standard ƒ component or composite
    2.4 Studio equipment
3 Video signal format
    3.1 Digital systems
    3.2 Analogue systems