PES CEmbCirc section

Type	Bytes	Value	Description
u16	2	8	Length of following string
char	8	"CEmbCirc"	CEmbCirc identification
section	?	block_description	Block Description
u16	2		unknown
u16	2		Type
u16	2		start angle
u16	2		end angle
u16	2		left
u16	2		top
u16	2		right
u16	2		bottom