This program is intended for software companies, programmers and web developers. Other users can still use many of its powerful tools. The program supports enhanced regular expression scripts to perform operations (such as sophisticated search, replace, color, etc.) on files. Regular expression scripts can be generated and edited by "REX Wizard" or as a sequence of statements with auto syntax coloring (or both). The system provide a debug mode for REX scripts with syntax errors and warnings Another tool, the "Strut Wizard", helps the user define simple and compound structures. When a structure is applied to files, it displays views describing the inner structure of each file. This tool can be used to display files with specific formats highlighting non-conforming data, if any, or for analyzing files with unknown formats. Version 5.0 many other tools are added.