Provides the caption displayed on the button.
xsf:xdTitleThe caption attribute is an optional attribute of the button element.
The following is an example of the caption attribute as it is used in the button element:
<xsf:menuArea name="msoInsertMenu">
   <xsf:menu caption="&Section">
      <xsf:button action="xCollection::insert" xmlToEdit="CD_10"
         caption="CD" showIf="always"></xsf:button>
      <xsf:button action="xCollection::insert" xmlToEdit="Track_14" 
         caption="Track" showIf="always"></xsf:button>
      <xsf:button action="xOptional::insert" xmlToEdit="Label_16" 
         caption="Label"></xsf:button>
   </xsf:menu>
</xsf:menuArea>