name: -hspace
<span tal:attributes="style string:margin:0pt;;padding:0pt;;margin-right:${self/attributes/len}">&nbsp;</span>

name: -vspace
<div tal:attributes="style string:margin:0pt;;padding:0pt;;margin-bottom:${self/attributes/len}"></div>

name: vspace

name: -bigskip
<div style="margin:0pt;padding:0pt;margin-bottom:24pt"></div>

name: -medskip
<div style="margin:0pt;padding:0pt;margin-bottom:12pt"></div>

name: -smallskip
<div style="margin:0pt;padding:0pt;margin-bottom:6pt"></div>

