Useful global variables

Name	Description	Possible values
literal::zero	Generic zero value. Can be used with various types such as algebra::vec, dpoint…	n.a.
literal::one	Generic one value. Can be used with various types such as algebra::vec, dpoint…	n.a.
literal::origin	Generic value for the origin point on a grid.	n.a.
border::thickness	Set the default border thickness of images	[0−UINT_MAX]
trace::quiet	Enable trace printing	true/false