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DsPdfJS API / FlowDirection
Indicates the direction of how lines of text are placed relative to one another.
HorizontalTopToBottom:
0
Specifies that horizontal text lines are placed from top to bottom.
VerticalLeftToRight:
2
Specifies that vertical text lines are placed from left to right.
VerticalRightToLeft:
1
Specifies that vertical text lines are placed from right to left.