To differentiate sections, leave extra white space instead of inserting graphical lines. (vmsolu.com)
In this CMO resume, extra white space ahead of the executive title and headings breaks up each area, while requiring little else for emphasis. (executiveresumeexpert.com)
The «Crop Margin» feature helps you to cut the extra white space surrounding the pages, which is most common in case of PDF files. (goodereader.com)