File used by Adobe InDesign, an application used to design page layouts for print and digital publishing; contains filtering information required to export InDesign text and graphics to other file formats; similar to .SMRD files, which are used for importing text and graphics. SMWT files, like SMRD files, are actually folders. To view the files inside of a SMWT file, remove the ".smwt" extension and open the resulting folder. NOTE: The "WT" in SMWT stands for "writer," and the "RD" in the SMRD extension stands for "reader."