Cr-auto-1 entry in lsblk Name category, why?

Hi, I am working on a custom drive partitioning scheme using the YaST installer. I do not understand where the cr-auto-2 and cr-auto-1 entries are coming from. I finally ask here because going through the installation process takes a couple hours.

As you may see from the screenshot that the # fdisk -l snip above lsblk shown in the screenshot also produces /dev/mapper/cr-auto-2.

So how is this being set when I am working with the YaST installer?

It is a LUKS encrypted partition/drive?

Yes, they are LUKS encrypted.

I am seeing on another machine here that there is no such entry while LVM is also in place.

:~ # lsblk
NAME                                        MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
sda                                           8:0    0 931.5G  0 disk  
├─sda1                                        8:1    0     8M  0 part  
└─sda2                                        8:2    0 931.5G  0 part  
  └─hightower-i5-6600k                      254:0    0 931.5G  0 crypt 
    ├─system-swap                           254:1    0  15.5G  0 lvm   [SWAP]
    └─system-root                           254:2    0   916G  0 lvm   /var
                                                                       /usr/local
                                                                       /srv
                                                                       /root
                                                                       /opt
                                                                       /home
                                                                       /boot/grub2/x86_64-efi
                                                                       /boot/grub2/i386-pc
                                                                       /.snapshots
                                                                       /

When using the Expert Partitioner I am choosing to encrypt the partition before greating a Logical Volume Group. Perhaps this is why? Where best to choose encryption for /dev/sde2 and /dev/sda1 then?

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