Windows 3.1 build 042

Windows 3.1 build 42 is an unleaked build of Windows 3.1. The build number is referenced in the Driver Development Kit for said operating system.

DRIVINIT.H
/* Start of additions for Win 31 build 42 */
 * 1) define DMPAPER_ENV_C3	   29		// Envelope C3	324 x 458 mm
 * 2) define DMPAPER_ENV_C4	   30		// Envelope C4	229 x 324 mm
 * 3) define DMPAPER_ENV_C6	   31		// Envelope C6	114 x 162 mm
 * 4) define DMPAPER_ENV_C65    32		// Envelope C65 114 x 229 mm
 * 5) define DMPAPER_ENV_B4	   33		// Envelope B4	250 x 353 mm
 * 6) define DMPAPER_ENV_B5	   34		// Envelope B5	176 x 250 mm
 * 7) define DMPAPER_ENV_B6	   35		// Envelope B6	176 x 125 mm
 * 8) define DMPAPER_ENV_ITALY  36		// Envelope 110 x 230 mm
 * 9) define DMPAPER_MONARCH    37		// Envelope Monarch 3.875 x 7.5 in
 * 10) define DMPAPER_ENV_PERSONAL 38 	 // 6 3/4 Envelope 3 5/8 x 6 1/2 in
 * 11) define DMPAPER_FANFOLD_US  39 	 // US Std Fanfold 14 7/8 x 11 in
 * 12) define DMPAPER_FANFOLD_STD_GERMAN 40	// German Std Fanfold 8 1/2 x 12 in
 * 13) define DMPAPER_FANFOLD_LGL_GERMAN 41	// German Legal Fanfold 8 1/2 x 13 in


 * 1) define DMPAPER_LETTER_EXTRA		 50   // Letter Extra 9 \275 x 12 in
 * 2) define DMPAPER_LEGAL_EXTRA		 51   // Legal Extra 9 \275 x 15 in
 * 3) define DMPAPER_TABLOID_EXTRA		 52   // Tabloid Extra 11.69 x 18 in
 * 4) define DMPAPER_A4_EXTRA		 53   // A4 Extra 9.27 x 12.69 in
 * 5) define DMPAPER_LETTER_TRANSVERSE	 54   // Letter Transverse 11 x 8 \275 in
 * 6) define DMPAPER_A4_TRANSVERSE		 55   // Transverse 297 x 210 mm
 * 7) define DMPAPER_LETTER_EXTRA_TRANSVERSE 56    // Letter Extra Transverse 12 x 9\275 in


 * 1) define DMPAPER_LAST	   DMPAPER_LETTER_EXTRA_TRANSVERSE

/* End of additions for Win 31 build 42 */
 * 1) define DMPAPER_USER   256