construct something different than a checkbox list

Maybe a scrollable list box? 

<select multiple size="..." ... >                                     
+   
   <option ... >...</option>                 
   ...
</select>

[download]

See SELECT, OPTGROUP, and OPTION elements.

In reply to Re: selecting more than one objects from a list by almut
in thread selecting more than one objects from a list by gogoglou

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