the author of this app says:
The FileBox utility allows you to transfer PC files of different expansions to the handheld for storing, along with the ability to further transfer all files of the handheld FileBox application back to the PC.
In order to save the memory, the handheld contains the option for compressing the files transported to it.
The FileBoxManager installed on the PC helps select, compress and prepare the files chosen by you for transferring to the device.
The FileBoxManager then allows you to determine the directory for transferring the files and for receiving the files transferred from it.
Now supports color on the Palm IIIc(tm) handheld.