1. A method of detecting paragraph alignment in a flow format document converted from a fixed format document, said method comprising: determining whether a paragraph is a single-line paragraph or a multi-line paragraph, each line in said paragraph having a left edge and a right edge and being positioned relative to a left margin and a right margin; when said paragraph is a single-line paragraph: identifying a paragraph alignment of said single line paragraph based on a comparison of the position of said left edge to at least one of said right edge and the left edge of another paragraph; when said paragraph is a multi-line paragraph: providing reference values for selected parameters; calculating actual values for said selected parameters of said multi-line paragraph; and deciding said paragraph alignment of said multi-line paragraph based on a comparison of said actual values to said reference values.