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           #include <curses.h>
           #include <term.h>
           extern char PC;
           extern char * UP;
           extern char * BC;
           extern short ospeed;
           int tgetent(char *bp, const char *name);
           int tgetflag(char *id);
           int tgetnum(char *id);
           char *tgetstr(char *id, char **area);
           char *tgoto(const char *cap, int col, int row);
           int tputs(const char *str, int affcnt, int (*putc)(int));


           These routines are included as a conversion aid for programs  that  use
           the  termcap  library.   Their parameters are the same and the routines
           are emulated using the terminfo database.  Thus, they can only be  used
           to  query  the  capabilities  of entries for which a terminfo entry has
           been compiled.
           The tgetent routine loads the entry for name.  It returns 1 on success,
           0  if there is no such entry, and -1 if the terminfo database could not
           be found.  The emulation ignores the buffer pointer bp.
           The tgetflag routine gets the boolean entry for id, or zero  if  it  is
           not available.
           The  tgetnum  routine gets the numeric entry for id, or -1 if it is not
           The tgetstr routine returns the string entry for id, or zero if  it  is
           not  available.   Use  tputs to output the returned string.  The return
           value will also be copied to the buffer pointed to  by  area,  and  the
           area value will be updated to point past the null ending this value.
           Only  the first two characters of the id parameter of tgetflag, tgetnum
           and tgetstr are compared in lookups.
           The tgoto routine instantiates the parameters into the given  capabili-
           ty.  The output from this routine is to be passed to tputs.
           The  tputs  routine is described on the terminfo(3NCURSES) manual page.
           It can retrieve capabilities by either termcap or terminfo name.
           The variables PC, UP and BC are set by tgetent to the terminfo  entry's
           data for pad_char, cursor_up and backspace_if_not_bs, respectively.  UP
           is not used by ncurses.  PC is used in the tdelay_output function.   BC
           is  used in the tgoto emulation.  The variable ospeed is set by ncurses
           style strings as terminfo.  (The tgoto function, if configured to  sup-
           port  termcap,  will  check  if  the string is indeed terminfo-style by
           looking for "%p" parameters or "$<..>" delays, and  invoke  a  termcap-
           style parser if the string does not appear to be terminfo).
           Because  terminfo  conventions for representing padding in string capa-
           bilities differ from termcap's, tputs("50"); will  put  out  a  literal
           "50" rather than busy-waiting for 50 milliseconds.  Cope with it.
           Note  that termcap has nothing analogous to terminfo's sgr string.  One
           consequence of this is that termcap applications  assume  me  (terminfo
           sgr0)  does not reset the alternate character set.  This implementation
           checks for, and modifies the data shown to the termcap interface to ac-
           commodate termcap's limitation in this respect.


           The  XSI  Curses standard, Issue 4 describes these functions.  However,
           they are marked TO BE WITHDRAWN and may be removed in future  versions.
           Neither  the  XSI Curses standard nor the SVr4 man pages documented the
           return values of tgetent correctly, though all three were in  fact  re-
           turned  ever  since SVr1.  In particular, an omission in the XSI Curses
           documentation has been misinterpreted to mean that tgetent  returns  OK
           or  ERR.  Because the purpose of these functions is to provide compati-
           bility with the termcap library, that is a defect in XCurses, Issue  4,
           Version 2 rather than in ncurses.
           External variables are provided for support of certain termcap applica-
           tions.  However, termcap applications' use of those variables is poorly
           documented, e.g., not distinguishing between input and output.  In par-
           ticular, some applications are reported to declare  and/or  modify  os-


           ncurses(3NCURSES),  terminfo(5), terminfo_variables(3NCURSES), putc(3).

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