Minor I think there is necessary a twig function know if a language string is defined on the templates.
Actually 2 variables are passed to the template (the language string, and a flag to know if the string is defined)
<dt><label for="{options.KEY}">{options.TITLE}{L_COLON}</label><!-- IF options.S_EXPLAIN --><br /><span>{options.TITLE_EXPLAIN}</span><!-- ENDIF --></dt> |
this is what i do
<dt><label for="{options.KEY}">{options.TITLE}{L_COLON}</label>{% if lang(options.TITLE_EXPLAIN) != options.TITLE_EXPLAIN %}<br /><span>{{ lang(options.TITLE_EXPLAIN) }}</span>{% endif %}</dt> |
And this is how i think it should be:
<dt><label for="{options.KEY}">{options.TITLE}{L_COLON}</label>{% if lang_exists(options.TITLE_EXPLAIN) %}<br /><span>{{ lang(options.TITLE_EXPLAIN) }}</span>{% endif %}</dt> |