The <fo:region-before> object defines the top region of a page (header).
XSL-FO uses the following elements to define the regions of a page:
Note: region-before, region-after, region-start, and region-end is a part of the
region-body. To avoid text in the region-body to overwrite text in the other regions, the
region-body must have margins at least the size of these regions.
Note: According to version 1.0 of the XSL-FO Recommendation, the padding and border-width
properties must be 0.
XSL-FO uses page templates called "Page Masters" to define the layout of pages.
Each template must have a unique name:
In the example above, three <fo:simple-page-master> elements, define three different
templates. Each template (page-master) has a different name.
The first template is called "intro". It could be used as a template for introduction
The second and third templates are called "left" and "right". They could be
used as templates for even and odd page numbers.
This is an extract from an XSL-FO document:
The code above defines a "Simple Page Master Template" with the name "PaperSize".
The width of the page is 297 millimeters and the height is 210 millimeters.
The top, bottom, left, and right margins of the page are all 1 centimeter.
The body has a 3 centimeter margin (on all sides).
The before, after, start, and end regions (of the body) are all 2 centimeters.
The width of the body in the example above can be calculated by subtracting the left and right
margins and the region-body margins from the width of the page itself:
297mm - (2 x 1cm) - (2 x 3cm) = 297mm - 20mm - 60mm = 217mm.
Note: regions (region-start and region-end) are not a part of the calculation. As described
earlier, these regions are parts of the body.
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