TRUE               57 contrib/gregbook/readpng.h #  define TRUE 1
TRUE               57 contrib/gregbook/readpng2.h #  define TRUE 1
TRUE               57 contrib/gregbook/writepng.h #  define TRUE 1
TRUE               27 contrib/pngminus/png2pnm.c #define TRUE (BOOL) 1
TRUE               27 contrib/pngminus/pnm2png.c #define TRUE (BOOL) 1