Verx#upd() should never be inherited;
use conv() for converting data instead, conv() is executed in upd();
rsp() is provided in Frm::Rsp instead of upd(), proc will be set at ext_rsp();
Datax/ add get(), last() for access @data;
JumpList becomes from Verx to Datax;
App::Sh,Wat::Sh/ access lower level list(now Datax) with get();
Datax@data will be completely hidden, use get(),set(),keys(),last() for access to @data;
rename Datax#last -> lastval to avoid mixup with keys.last;
JumpList/ takes dataname from upper cfg;
Mcr::List/ remove get_obj() -> use get() instead, remove @current -> use lastval instead;
McrList/ more compatible with JumpList;