tvinit (ul_tvcurses)

	tvinit()

	This routine initializes the screen.  It should be the first
	ul_tvcurses routine called in a program.

	This function requires the following include files:

	ul_tvcurses_h:tvcurses_h

	Related functions:

	tv_cleanup, tvmc, tvflshc, tvm_centerc, tvfillc, tvhlinc, tvvlinc,
	tvboxc, tvblnkc, tvceolc, tvceopc, tvclrc, rdcursc, tvscrsc, tvrfmtc,
	tvsetcolorc

	C usage:

	tvinit();