MOSAIC_VAX_V54-3.EXE    built on VMS V5.4-3 with Motif 1.1 (no HTTPS support) 
MOSAIC_VAX_V73.EXE      built on VMS V7.3 with Motif 1.2-6 and HP SSL
MOSAIC_ALPHA_V73-2.EXE  built on VMS V7.3-2 with Motif 1.3-1 ECO 2 and HP SSL

MOSAIC.DAT should be placed in SYS$COMMON:[DECW$DEFAULTS.USER] to make
it available system wide or in SYS$LOGIN to make it available to an
individual account.