-as macros for BSD compatibility,
-.\" ***************************************************************************
-.SH HISTORY
-SVr2 introduced the terminfo feature.
-Its programming manual mentioned the following low-level functions.
-.PP
-.TS
-lB lB
-lB lx.
-Function Description
-_
-fixterm restore tty to \*(``in curses\*('' state
-gettmode establish current tty modes
-mvcur low level cursor motion
-putp T{
-utility function that uses \fBtputs\fP to send characters via \fBputchar\fP.
-T}
-resetterm set tty modes to \*(``out of curses\*('' state
-resetty reset tty flags to stored value
-saveterm save current modes as \*(``in curses\*('' state
-savetty store current tty flags
-setterm establish terminal with given type
-setupterm establish terminal with given type
-tparm instantiate a string expression with parameters
-tputs apply padding information to a string
-vidattr like \fBvidputs\fP, but outputs through \fBputchar\fP
-vidputs T{
-output a string to put terminal in a specified video attribute mode
-T}
-.TE
-.PP
-The programming manual also mentioned
-functions provided for \fItermcap\fP compatibility
-(commenting that they \*(``may go away at a later date\*('').
-.PP
-.TS
-lB lB
-lB lx.
-Function Description
-_
-tgetent look up \fItermcap\fP entry for given \fIname\fP
-tgetflag get boolean entry for given \fIid\fP
-tgetnum get numeric entry for given \fIid\fP
-tgetstr get string entry for given \fIid\fP
-tgoto apply parameters to given capability
-tputs T{
-apply padding to capability, calling a function to put characters
-T}
-.TE
-.PP
-Early terminfo programs obtained capability values from the
-\fBTERMINAL\fP structure initialized by \fBsetupterm\fP.
-.PP
-SVr3 extended terminfo by adding functions to retrieve capability values
-(like the termcap interface),
-and reusing \fBtgoto\fP and \fBtputs\fP:
-.PP
-.TS
-lB lB
-lB lx.
-Function Description
-_
-tigetflag get boolean entry for given \fIid\fP
-tigetnum get numeric entry for given \fIid\fP
-tigetstr get string entry for given \fIid\fP
-.TE
-.PP
-SVr3 also replaced several of the SVr2 \fIterminfo\fP functions
-which had no counterpart in the \fItermcap\fP interface,
-documenting them as obsolete.
-.PP
-.TS
-lB lB
-l lx.
-Function Replaced by
-_
-crmode cbreak
-fixterm reset_prog_mode
-gettmode \fIn/a\fP
-nocrmode nocbreak
-resetterm reset_shell_mode
-saveterm def_prog_mode
-setterm setupterm
-.TE
-.PP
-SVr3 kept the \fBmvcur\fP, \fBvidattr\fP and \fBvidputs\fP functions,
-along with \fBputp\fP, \fBtparm\fP and \fBtputs\fP.
-The latter were needed to support padding,
-and handling functions such as \fBvidattr\fP
-(which used more than the two parameters supported by \fBtgoto\fP).
-.PP
-SVr3 introduced the functions for switching between terminal
-descriptions, e.g., \fBset_curterm\fP.
-Some of that was incremental improvements to the SVr2 library:
-.bP
-The \fBTERMINAL\fP type definition was introduced in SVr3.01,
-for the \fBterm\fP structure provided in SVr2.
-.bP
-The various global variables such as \fBboolnames\fP were mentioned
-in the programming manual at this point,
-though the variables were provided in SVr2.
-.PP
-SVr4 added the \fBvid_attr\fP and \fBvid_puts\fP functions.
-.PP
-There are other low-level functions declared in the \fIcurses\fP header files
-on Unix systems,
-but none were documented.
-The functions marked \*(``obsolete\*('' remained in use
-by the Unix \fBvi\fP(1) editor.
-.SH PORTABILITY
-.SS Extensions
-The functions marked as extensions were designed for \fBncurses\fP(3X),
-and are not found in SVr4 curses, 4.4BSD curses,
-or any other previous version of curses.
-.SS Legacy functions
-X/Open notes that \fBvidattr\fP and \fBvidputs\fP may be macros.
-.PP
-The function \fBsetterm\fP is not described by X/Open and must
-be considered non-portable.
-All other functions are as described by X/Open.