Imports github.com/yofu/dxf/header github.com/yofu/dxf/table github.com/yofu/dxf/block github.com/yofu/dxf/color github.com/yofu/dxf/entity github.com/yofu/dxf/geometry github.com/yofu/dxf/insunit github.com/yofu/dxf/drawing Standard library imports bufio errors fmt io os strconv strings