2.1.656 Section 15.4.28, Underlining Type
a. The standard defines the attribute style:text-underline-type, contained within the element <style:text-properties>
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This attribute is supported in core Word 2007.
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This attribute is supported on save for text in SmartArt and chart titles and labels.
b. The standard defines the attribute style:text-underline-type, contained within the element <style:text-properties>
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This attribute is supported in core Excel 2007.
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On save, Excel 2007 converts its Single Accounting type to the value "single," and its Double Accounting type to the value "double".
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This attribute is supported on load for text in any of the following elements:
<draw:rect>
<draw:polyline>
<draw:polygon>
<draw:regular-polygon>
<draw:path>
<draw:circle>
<draw:ellipse>
<draw:caption>
<draw:measure>
<draw:frame>
<draw:text-box>
<draw:custom-shape>
This attribute is supported on save for text in any of the following items: text boxes, shapes, SmartArt, chart titles, and labels. On load, the attributes named style:text-underline-type, style:text-underline-style, style:text-underline-width, and style:text-underline-mode are all used in determining which enumeration to set for the u (Underline) run attribute in OOXML. On load, no underline is read if either the style:text-underline-type attribute or the style:text-underline-style attribute has a value of "none".
c. The standard defines the attribute style:text-underline-type, contained within the element <style:text-properties>
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This attribute is supported on load for text in the following elements:
<draw:rect>
<draw:polyline>
<draw:polygon>
<draw:regular-polygon>
<draw:path>
<draw:circle>
<draw:ellipse>
<draw:caption>
<draw:measure>
<draw:text-box>
<draw:frame>
<draw:custom-shape>
On read, the properties style:text-underline-type, style:text-underline-style, style:text-underline-width, and style:text-underline-mode are considered together to determine which enumeration to set for the u (Underline) run property attribute in PowerPoint 2007.
On read, if either of the properties "style:text-underline-type="none"" or "style:text- underline-style="none"", no underline is read.