<values>day, month, year, lifetime</values>
<comment>Unit in which membership period is expressed.</comment>
<add>1.5</add>
+ <html>
+ <type>Select</type>
+ </html>
</field>
<field>
<name>duration_interval</name>
<pseudoconstant>
<optionGroupName>visibility</optionGroupName>
</pseudoconstant>
+ <html>
+ <type>Select></type>
+ </html>
</field>
<field>
<name>weight</name>