wad2svg takes a level file for the computer game Doom, and draws a 2D map of the level as an SVG (Scalable Vector Graphic) file. This can then be edited and/or converted to a raster image using a suitable vector graphics programs. wad2svg can also draw the node tree of a Doom level, and is designed to be extended to draw other aspects of the level.
Device::ParallelPort is a Perl API that allows low level access to the parallel port of most computers. It does this by using a number of drivers, which can be customized and added to, including Linux (direct and parport), Win32, Script, Dummy, and more. It also contains a number of direct access devices including an example printer and a relay controller card.
The HTML::Defaultify Perl module is designed to allow CGI programmers to present forms with some fields filled in, which is handy for letting users correct bad input, show records to be edited, and much more. The main function, defaultify(), takes any block of HTML and a hash of field names and values, and returns the HTML with the form fields set to those values. Value lists for multiple same-named fields are supported, as are pages with multiple forms. Several different input formats are supported for compatibility with existing tools.
The Apache::FileManager module is a simple HTML file manager. It provides file manipulations such as cut, copy, paste, delete, rename, extract archive, create directory, create file, edit file, and upload files. It also has the ability to rsync the server htdocs tree to another server with the click of a button.