Picture Show 2.5 Registered features 
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1. Support for many more Image types:
  ART, BMP, CUT, DIB. GEM, GIF, HRZ, IFF, IMG, JPG, 
  LBM, MAC, MSP, PCX, PIC, RAS, RLE, TGA, TIF, WMF, and WPG file formats.

ART	PFS First Publisher
BMP	Microsoft Windows and OS2 bitmaps
CUT	Dr. Halo
DIB	Microsoft Windows Device Independent Bitmaps
GEM	GEM Raster files (Digital Research)
GIF	Compuserve Graphics Interchange Format - More Comprehensive and faster
HRZ	Slow Scan Television
IFF	Interchange File Format (Amiga Electronic Arts Deluxe Paint)
IMG	GEM Raster files (Digital Research)
JPG	Joint Photographics Experts Group
LBM	Interchange File Format (Amiga Electronic Arts Deluxe Paint)

MAC	Macintosh Paint
MSP	Microsoft Paint
PCX	ZSoft PC Paintbrush
PIC	Pictor PC Paint
RAS	Sun Raster files
RLE	Run-length Encoded BMP files
TGA	Targa TrueVision Files
TIF	Tagged Image File Format (PC or Mac)
WMF	Windows Meta-files
WPG	Word Perfect Graphics

2. MS Windows Help file for the application.

3. Allows 80 Images per Database.

4. Nag screen removed from the screen saver.