libzypp _ Builtin repository variables:

Hi, reviewing libzypp > Repository Variables > Builtin repository variables located here > https://doc.opensuse.org/projects/libzypp/HEAD/zypp-repovars.html openSUSE Tumbleweed installed on machine, snapshot 20241211 passing the following commands below arch x86_64 - basearch basearch: command not found - releasever releasever: command not found - releasever_minor releasever_minor: command not found - releasever_major releasever_major: command not found - releasever and $releasever_minor is empty. - A majority of these builtin repository variables do not provide any information. Can you tell me why this is?