XSL Formatter Q&A

Q.	The `margin` is specified for `fo:block`, and, in addition, `margin` is specified for the child's `fo:table`. However, `margin` of parents' `fo:block` doesn't influence `fo:table`. Why? [No.2004032508]
A.	For expample, <fo:block margin-left="1in"> <fo:table margin-left="0.75in"> the W3C Recommendation for XSL-FO says as follows: 5.3.2. Margin, Space, and Indent Properties If the corresponding absolute "margin" property is specified on the formatting object and the formatting object generates a reference area the computed value of the margin is used to calculate the computed value of the corresponding "Y-indent" property, where Y is either "start" or "end". The formulae for "start-indent" and "end-indent" are": start-indent = margin-corresponding + padding-corresponding + bordercorresponding-width end-indent = margin-corresponding + padding-corresponding + bordercorresponding-width `margin-left` is treated as `start-indent`. The value of `start-indent` is used based on reference-area. The `fo:table` generates reference-area. Therefore, `margin-left` of this `fo:table` is converted into `start-indnet`, and `margin-left`(`start-indnet`) of parents block is ineffectual. If the from-parent() function is used, the result is the same. <fo:table margin-left="from-parent() + 0.75in">

5.3.2. Margin, Space, and Indent Properties

If the corresponding absolute "margin" property is specified on the formatting object and the formatting object generates a reference area the computed value of the margin is used to calculate the computed value of the corresponding "Y-indent" property, where Y is either "start" or "end". The formulae for "start-indent" and "end-indent" are":
start-indent = margin-corresponding + padding-corresponding + bordercorresponding-width
end-indent = margin-corresponding + padding-corresponding + bordercorresponding-width

margin-left is treated as start-indent. The value of start-indent is used based on reference-area. The fo:table generates reference-area. Therefore, margin-left of this fo:table is converted into start-indnet, and margin-left(start-indnet) of parents block is ineffectual. If the from-parent() function is used, the result is the same.

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