spacing = ...
Specifies the margin of clear space to be left around the entire outside of the markup element (i.e. all four sides at once).
Specifying a distance value for this field
This field takes a distance value specified with either one or two value elements.
- The first element is a numerical distance value.
- The second, optional element, is a text string containing the units of distance to be applied.
If the units are not specified, the distance is interpreted in pixels {px} by default.
Example
<box spacing = 5> <! specifies 5 pixels as the value for the spacing property. !>
<box spacing = 5,{px}> <! 5 pixels; explicitly stated !>
<box spacing = 20,{%}> <! percentage units !>
<box spacing = 12,{pt}> <! typesetting point units !>
<box spacing = 1.2,{em}> <! multiple of current font size !>