使用WiX，如何根据安装时可用的内容将单个文件安装到（可能）多个子目录？

I'm using WiX, and would like to know the .wxs necessary to take a file and install it to every available sub-directory of a particular location. This could mean 0 or more final installation locations, determined at install time based on the currently existing directory structure. For example, if I started the install with:I'm using WiX, and would like to know the .wxs