Help with an MS Word Form

[clenelc]

Hi!
Good to be here, I was wondering if anyone knows what exactly was used to create the form attached? Specifically, I am wondering how they were able to insert those underlines after "Property of" that when you begin to fill out, the underline begins to disappear and the text does not wrap; it seems fixed to that line. They do this also later on in the document with the "dotted underlines."

I have tried to create a form myself, but am not able to replicate what they did, but I will admit that I am no expert on MS Word form creations.

Thanks in advance for any help!