Replace spare lines

Hi, I am ready to compile my book. It has maybe some spare lines between paragraphs I have noticed. Is there a tool to remove any spare lines? I know that I can do this using notepad++ and a plugin but I am not sure how easy that will be and wanted to check if scrivener has this function built in. :smiley:
Thanks

Wow, so no answer on this incredibly simple question. For others who have this problem, I used Notepad++ and the NppTextFX plugin. Unfortunately after this I had to replace some names with unusual characters that lost their formatting, but other than that, it worked well.

Onto the next problems: the compile settings!