lform(optional)Describes the line style of a line.
Value conforms to data.LINEFORM.
lsegs(optional)Describes the number of segments into which a dashed or dotted line may be divided,
the number of "peaks" of a wavy line; a pair of space-separated values (minimum and
maximum, respectively) provides a range between which a rendering system-supplied
may fall, while a single value indicates a fixed amount of space; that is, the minimum
maximum values are equal.
One or two values of datatype
a positive integer no smaller than 2, separated by a space.