Unit test: table-cals.052.xml

This tests table footnotes. In particular, for PDF, although automated testing doesn’t actually…test that.

The data map originally came from the guide¹.

Table 1. The data map

Key	Value
`align`	The alignment of the data (if specified)
`content-type`	The computed content type for the data
`contentheight`	The content height of the data (if specified^a)
`contentwidth`	The content width of the data (if specified)
`extension`	The extension of the data file (if there is one)
`fileref`	The original `fileref` attribute value
`height`	The height of the data (if specified^a)
`href`	The computed `href` value for the HTML element; this takes account of the `mediaobject-input-base-uri` and `mediaobject-output-base-uri`).
`node`	The data element
`params`	Any `multimediaparams` associated with the data element
`properties`	The properties of the element (as returned by the extension funtions; this can include EXIF data and metadata)
`scale`	The scaling factor (if there is one) or 1.0
`scalefit`	True if the image should be scaled to fit (implicitly or explicitly)
`uri`	The computed absolute URI of the input data
`valign`	The vertical alignment of the data (if specified)
`width`	The width of the data (if specifieid)

DocBook uses “depth” instead of “height”, but we convert it to height for consistency with most other systems.

This is the paragraph following the table.