You can make a copy of the document files in your User-set by selecting the Export menu item. Specify the directory you want to have the file copies placed in. The file names will be generated using the text in the Prefix box, a counter and the original extension. If for instance you have 3 tiff files in your User-set and select export, with the Export directory set to "c:\tmp" and prefix set to "Draw", the three files generated will be: c:\tmp\Draw1.tif, c:\tmp\Draw2.tif and c:\tmp\Draw3.tif.
If you operate on a By-File database you can use the Use original filenames option to avoid the artificial names described above.