5.Playback manager
	MARKS [Ryu] is renewable by specifying a portion (reproduction section) to
	hear the data under voice in a project from.
	his operation is performed by calling a reproduction manager from the menu of a reproduction screen.
	The reproduction manager can specify two or more reproduction sections,
	and it comes out to set up volume and the existence of a repeat per reproduction section.
	Moreover, an order of two or more reproduction sections can also be changed.
	The set-up reproduction section can be saved as a playlist, and it can be used, loading it always.
	The a maximum of 10 sections can be assigned to one playlist to one project, and a maximum of 20 playlists can be saved.
		playlist1	playlist2		playlist20
		section1	section1		section1
		section2	section2	〜	section2
		|	|		|
		|	|		|
		section10	section10		section10
	for example1）It is also possible to also reproduce in order of section A->B->C->D->E
	by the following reproduction section setup and to reproduce like section D->A->C.
			Volume 8		Volume10		Volume 7
			sectionA		sectionB		sectionC
	Record1
		Volume -1			Volume 9		*Volume(-1) inherits the existing setup.
		sectionD			sectionE
	Record2
	for example2）In the following example, the section E of the record 2 is played after playback
	of the section A of the record 1, and it is repeated (repeat) and it plays.
			sectionA		sectionB		sectionC
	Record1
		sectionD			sectionE
	Record2
	<Playback section setting screen>
	<The Playback manager screen after a reproduction section setup>
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