This enumeration specifies the line styles used to draw a mark or its border.

Values:

IG_ARTX_PEN_SOLID	Specifies a solid line.	__________
IG_ARTX_PEN_DASH	Specifies a dashed line.	-------------
IG_ARTX_PEN_DOT	Specifies a dotted line.	• • • • • • •
IG_ARTX_PEN_DASHDOT	Specifies an alternating dash-dot line.	-•-•-•-•-•-•-•
IG_ARTX_PEN_DASHDOTDOT	Specifies an alternating dash-dot-dot line.	-••-••-••-••-••
IG_ARTX_PEN_PDFDASH1	Specifies a PDF dash line 1 (i.e., 2 on, 2 off).
IG_ARTX_PEN_PDFDASH2	Specifies a PDF dash line 2 (i.e., 3 on, 3 off).
IG_ARTX_PEN_PDFDASH3	Specifies a PDF dash line 3 (i.e., 4 on, 4 off).
IG_ARTX_PEN_PDFDASH4	Specifies a PDF dash line 4 (i.e., 4 on, 3 off, 2 on, 3 off).
IG_ARTX_PEN_PDFDASH5	Specifies a PDF dash line 5 (i.e., 4 on, 3 off, 16 on, 3 off).
IG_ARTX_PEN_PDFDASH6	Specifies a PDF dash line 6 (i.e., 8 on, 4 off, 4 on, 4 off).
IG_ARTX_PEN_UNDERLINE	Specifies a single line along the bottom of the annotation rectangle. Applicable for IG_ARTX_MARK_LINK only.	___________________________