running a .txt file to change levels, draw line and label the level

Good Morning,

I am trying to figure out how the previous administrators ran a .txt file into a .dgn so that it will go through all the levels, draw a line for that level and then place text of that level's name. Here is the beginning few lines of the .txt file. I have tried @C:\path\file_name.txt in the keyin but it doesn't seem to work. Nor does starting the Place Line command and then running the keyin.

I appreciate any help, thanks.

God bless,

David