Specify the conditions to display the field based on the value of the other fields. The identifier of the other fields has to be entered between @.
Example @selection_1@=="Toto" conditions the display of the field only when field selection_1 has a value of Toto.
It is possible to use Boolean operators || (or) and && (and).
You will find <a href="net/5080" class="spip_url spip_out auto" rel="nofollow external">https://contrib.spip.net/5080 " target="_blank">full net/5080">full documentation of the syntax on spip^?-contrib.