<lnTlToBr> (Top-Left to Bottom-Right Border Line Properties)
This element defines the line properties associated with the diagonal line from the top left corner of the cell to the bottom right corner.
<a:lnTlToBr w="38100" cap="flat" cmpd="sng" algn="ctr">  <a:solidFill>    <a:schemeClr val="accent2"/>  </a:solidFill>  <a:prstDash val="solid"/>  <a:round/>  <a:headEnd type="none" w="med" len="med"/>  <a:tailEnd type="none" w="med" len="med"/></a:lnTlToBr>
In this example, one can see that the border line style defined with certain properties, such as a flat end line cap, a given width, head and tail end, color, etc. ]
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Specifies the alignment to be used for the underline stroke. The possible values for this attribute are defined by the ST_PenAlignment simple type (§5.1.12.40).  | 
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Specifies the ending caps that should be used for this line. Examples of cap types are rounded, flat, etc. If this attribute is omitted, than a value of square is assumed. The possible values for this attribute are defined by the ST_LineCap simple type (§5.1.12.31).  | 
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Specifies the compound line type to be used for the underline stroke. If this attribute is omitted, then a value of sng is assumed. The possible values for this attribute are defined by the ST_CompoundLine simple type (§5.1.12.15).  | 
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Specifies the width to be used for the underline stroke. If this attribute is omitted, then a value of 0 is assumed. The possible values for this attribute are defined by the ST_LineWidth simple type (§5.1.12.35).  | 
The following XML Schema fragment defines the contents of this element:
<complexType name="CT_LineProperties">
	<sequence>
	<group ref="EG_LineFillProperties" minOccurs="0" maxOccurs="1"/>
	<group ref="EG_LineDashProperties" minOccurs="0" maxOccurs="1"/>
	<group ref="EG_LineJoinProperties" minOccurs="0" maxOccurs="1"/>
	<element name="headEnd" type="CT_LineEndProperties" minOccurs="0" maxOccurs="1"/>
	<element name="tailEnd" type="CT_LineEndProperties" minOccurs="0" maxOccurs="1"/>
	<element name="extLst" type="CT_OfficeArtExtensionList" minOccurs="0" maxOccurs="1"/>
	</sequence>
	<attribute name="w" type="ST_LineWidth" use="optional"/>
	<attribute name="cap" type="ST_LineCap" use="optional"/>
	<attribute name="cmpd" type="ST_CompoundLine" use="optional"/>
	<attribute name="algn" type="ST_PenAlignment" use="optional"/>
</complexType>