The sample pages shown are taken from a two-column column book that has two-column footnotes. The footnotes are in-column and unbalanced. The sample is a PDF file that is 230 KB in size. Some of the features to note are as follows: 

The sample pages  linked here are Portable Document Format^® files produced by Pagetec's SGML Composer executed with our PDF Driver invoked. If you are not already an Acrobat user, you may use the download button below to get a free copy of Acrobat Reader^©from the Adobe Systems Web Site.