Breaking paragraphs into lines

The linebreaking algorithm in the node library turns a node list into a vertical list and returns additional information about the lines.

func Linebreak(n Node, settings *LinebreakSettings) (*VList, []*Breakpoint)

Settings can be configured:

Name	Type	Description	Default
SqueezeOverfullBoxes	bool	Allow negative space between words to avoid overfull lines	false
DemeritsFitness	int	The demerits to be added when the fitness class changes	100
DoublehyphenDemerits	int	Demerits when two consecutive rows end with hyphens	3000
HangingPunctuationEnd	bool	Allow hyphens and other punctuation overflow on the right margin	false
FontExpansion	float64		0.0
HSize	bag.ScaledPoint	The total width of the paragraph	0
Hyphenpenalty	int	Penalty for a line ending with a hyphen	50
Indent	bag.ScaledPoint	Indentation of the first row(s)	0
IndentRows	int	Number of rows to be indented	0
LineEndGlue	*Glue	Glue at the end of each line (default 0)	0
LineHeight	bag.ScaledPoint	Distance between two base lines	0
LineStartGlue	*Glue	Glue at the beginning of each line (default 0)	0
OmitLastLeading	bool	If true, no leading is applied after the last line	false
Tolerance	float64		+inf