It is a wonderful source. Scanned copies of the church books for most of Denmark from the late 1700's thru the early 1900's...including parts of Schleswig-Holstein.
I attached a copy of the page showing Theodor Fries' birth/baptism record so that you can see what some of the records look like. Theodor is #3 (and his cousin Heinrich is #4)
Have fun,
J Murphy