Problem fiilling out new fields for a custom post-tlype

I guess I don’t understand exactly how to fill one of the items when
creating a new custom post-type.

The line item in question is ‘default Value’

“Default Value- Enter the default value, this will be used for the Link text.”
and exactly what is meant by ‘link text’ in this case?

In every case, I have given this ‘default value’ the same text as my ‘front end title’ — Apparently this in not correct. Now I find that if a past
listing has not updated the listing then the detail page shows the repeated word or phrase.

For example, if the Front end title was Warranty, then the detail page shows
warranty warranty. Once the listing is upgraded it then properly shows
warranty – Yes

If the question was: Do you provide a warranty? How should I rephrase the questions or enter the default value so the detail page doesn’t show this redundancy?

I’m sure this is as clear as mud.