const static char* FEATURE_TEXT = "title";
const static char* FEATURE_KEYSEQUENCE = "keysequence";
const static char* FEATURE_NESTED = "nested";
+const static char* FEATURE_WHEN_NESTED = "when_nested";
const static char* FEATURE_DOC = WORKBENCH_DOC;
// NODE_VALIDATOR properties, NODE_SELFILTER properties
const static char* _PARAMETERS = "parameters";