Have you ever wondered about the doodles on the walls, tables, billboards, roadsides, etc.? Yeah, most of them are "x loves y", "vote for abc", or even "i hate xyz". But these doodles are more than writing, or scribbling on the walls. Read this post to understand what your doodles mean.
In handwriting analysis, line spacing is important in determining how a person behaves in a working environment, and deals with pressure in handling tasks and decision making. Hence, what writing above the lines means doesn't signify the person's true identity. To understand the person better, a complete handwriting analysis is needed.
It's important to note that hypothesis or theory cannot be proven, it can only be invalidated. Graphology, numerology and astrology have never been scientifically shown to be invalid. Seasoned numerologists and astrologers consistently predict fated circumstances and accurately identify personality traits.