Что означают строчки в выводе portage

Performing Global Updates
(Could take a couple of minutes if you have a lot of binary packages.)
  .='update pass'  *='binary update'  #='/var/db update'  @='/var/db move'
  s='/var/db SLOT move'  %='binary move'  S='binary SLOT move'
  p='update /etc/portage/package.*'
/var/db/repos/gentoo/profiles/updates/2Q-2022............
/var/db/repos/gentoo/profiles/updates/3Q-2020..............
/var/db/repos/gentoo/profiles/updates/1Q-2023.........................
/var/db/repos/gentoo/profiles/updates/3Q-2021............
/var/db/repos/gentoo/profiles/updates/2Q-2023.............................
/var/db/repos/gentoo/profiles/updates/4Q-2022............
@!!! Cannot update binary: Destination exists.
!!! dev-python/setuptools_scm-7.1.0 -> dev-python/setuptools-scm-7.1.0
@!!! Cannot update binary: Destination exists.
!!! dev-python/flit_core-3.8.0 -> dev-python/flit-core-3.8.0
###############