i am unsure if this is normal but as this does look more like code lines than placeholders :

Upgrades from the guilds does not have normal text instead showing :

SLAVENUMBERUPGRADE_NAME:

SLAVENUMBERUPGRADE_DISC

-

SLAVEQUALITY_NAME

SLAVEQUALITY_DISC

So i can guess what they are for but it is still a bit confusing.

Is it normal placeholder or is something wrong?  because it is quite annoying