Is pressing the enter key is the only way to insert blank space at the top of a document?
You can change the paragraph spacing Format > Paragraph.Then you can change the paragraph spacing by changing the amount of "pts" (points) above your heading - should be the second to bottom, left drop down and will be set to either Auto or 0 pt by default. You can also change the spacing below the heading as well, but for what you want to do, the above spacing is the important value.So if you changed this to 12 pt, you would get a gap prior to your text equalling the same height as a line of 12 pt text. You can also type in the amount of spacing you want, you don't have to go to the default settings, so if you wanted a 15 pt gap, you get just type in "15 pt".