Typography, or something.

[ecchi]

Please look at these two typographers marks:



Now, I think the first is "end of paragraph" the second is "return". The different effect is the the second starts a new line whilst the first starts a new line and leaves a big gap (sort of like "double line spacing" for one line).

In Open Office, how the fuck do I switch between the two. I've just opened a document to edit, in the first half, whenever I hit return I get the paragraph thing, and in the second half of the document I get the simple return. I just want a basic return everywhere. How do I tell Open Office to stick to simple returns not paragraphs?