Mcr::Exe/ exe() function moved to @pre_procs (Exe::exe() is never inherited);
Mcr::Man/ add @parameter which is identical with IntGrp@parameter;
Mcr::List#add() makes almost all processes about completion list and setting default;
Mcr::List provides get() for access @data and set default;
Mcr::List#to_s shows the order number of the list instead of sid;
IntGrp shold be added to Mcr::Command when Mcr::Exe is initialized (was too early);