in src/main/resources/res/ui/slinglog.js [79:90]
function addAdditive(row) {
var additiveElement = $(row).find(".logAdditive");
var currentAdditivity = additiveElement.attr("data-currentAdditivity");
if(!currentAdditivity) {
// default additivity is false
currentAdditivity = "false";
}
var checked = currentAdditivity == "true" ? "checked" : "";
additiveElement.after('<input class="editElement ui-state-default" type="checkbox" name="logAdditive" value="true" '+ checked +' />')
additiveElement.toggle();
}