Mergemaster easily merges certain document information captured during bibliographic coding with attachment ranges and document ranges with attachments in a unitized document. It is not limited to litigation support and also merges fields or columns of data of one ascii text file with fields from another text file. It allows you to choose which fields you want in the resulting file as well as the order. It also allows you to just rearrange a single file i.e. columns and the delimiters used.