Compound Objects

Type	Field	Units (values)	;SPMnbsp;
`int`	`object_type`	`O_COMPOUND`	6
int	`upperright_corner_x`	pixels	;SPMnbsp;
int	`upperright_corner_y`	;SPMnbsp;	;SPMnbsp;
int	`lowerleft_corner_x`	;SPMnbsp;	;SPMnbsp;
int	`lowerleft_corner_y`	;SPMnbsp;	;SPMnbsp;

The Compound object description describes a compound object bounded by the rectangle determined by the points

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It consists of all the objects following it until an object whose <#732#>object_type<#732#> field is <#733#>O_END_COMPOUND<#733#> (-6) is encountered. Compound objects may be nested.