Backout part of my previous change that changed MIN/TIME to VMIN/VTIME

throughout the man page.  Only some of these were corrected.

Pointed out by: bde

share/man/man4/termios.4

@@ -30,7 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"	@(#)termios.4	8.4 (Berkeley) 4/19/94
-.\"	$Id: termios.4,v 1.4 1997/03/07 02:49:36 jmg Exp $
+.\"	$Id: termios.4,v 1.5 1997/03/14 05:01:14 mpp Exp $
 .\"
 .Dd April 19, 1994
 .Dt TERMIOS 4
@@ -354,54 +354,54 @@ members of the
 array are used to determine how to
 process the bytes received.
 .Pp
-.Dv VMIN
+.Dv MIN
 represents the minimum number of bytes that should be received when
 the
 .Xr read 2
 function successfully returns.
-.Dv VTIME
+.Dv TIME
 is a timer of 0.1 second
 granularity that is used to time out bursty and short term data
 transmissions.  If
-.Dv VMIN
+.Dv MIN
 is greater than
 .Dv \&{ Dv MAX_INPUT Ns \&} ,
 the response to the
 request is undefined.  The four possible values for
-.Dv VMIN
+.Dv MIN
 and
-.Dv VTIME
+.Dv TIME
 and
 their interactions are described below.
-.Ss "Case A: VMIN > 0, VTIME > 0"
+.Ss "Case A: MIN > 0, TIME > 0"
 In this case
-.Dv VTIME
+.Dv TIME
 serves as an inter-byte timer and is activated after
 the first byte is received.  Since it is an inter-byte timer, it is reset
 after a byte is received.  The interaction between
-.Dv VMIN
+.Dv MIN
 and
-.Dv VTIME
+.Dv TIME
 is as
 follows:  as soon as one byte is received, the inter-byte timer is
 started.  If
-.Dv VMIN
+.Dv MIN
 bytes are received before the inter-byte timer expires
 (remember that the timer is reset upon receipt of each byte), the read is
 satisfied.  If the timer expires before
-.Dv VMIN
+.Dv MIN
 bytes are received, the
 characters received to that point are returned to the user.  Note that if
-.Dv VTIME
+.Dv TIME
 expires at least one byte is returned because the timer would
 not have been enabled unless a byte was received.  In this case
-.Pf \&( Dv VMIN
+.Pf \&( Dv MIN
 > 0,
-.Dv VTIME
+.Dv TIME
 > 0) the read blocks until the
-.Dv VMIN
+.Dv MIN
 and
-.Dv VTIME
+.Dv TIME
 mechanisms are
 activated by the receipt of the first byte, or a signal is received.  If
 data is in the buffer at the time of the 
@@ -409,27 +409,27 @@ data is in the buffer at the time of the
 the result is as
 if data had been received immediately after the
 .Fn read .
-.Ss "Case B: VMIN > 0, VTIME = 0"
+.Ss "Case B: MIN > 0, TIME = 0"
 In this case, since the value of
-.Dv VTIME
+.Dv TIME
 is zero, the timer plays no role
 and only
-.Dv VMIN
+.Dv MIN
 is significant.  A pending read is not satisfied until
-.Dv VMIN
+.Dv MIN
 bytes are received (i.e., the pending read blocks until
-.Dv VMIN
+.Dv MIN
 bytes
 are received), or a signal is received.  A program that uses this case to
 read record-based terminal
 .Dv I/O
 may block indefinitely in the read
 operation.
-.Ss "Case C: VMIN = 0, VTIME > 0"
+.Ss "Case C: MIN = 0, TIME > 0"
 In this case, since
-.Dv VMIN
+.Dv MIN
 = 0,
-.Dv VTIME
+.Dv TIME
 no longer represents an inter-byte
 timer.  It now serves as a read timer that is activated as soon as the
 read function is processed.  A read is satisfied as soon as a single
@@ -438,12 +438,12 @@ the timer expires, no bytes are returned.  If the timer does not
 expire, the only way the read can be satisfied is if a byte is received.
 In this case the read will not block indefinitely waiting for a byte; if
 no byte is received within
-.Dv VTIME Ns *0.1
+.Dv TIME Ns *0.1
 seconds after the read is initiated,
 the read returns a value of zero, having read no data.  If data is
 in the buffer at the time of the read, the timer is started as if
 data had been received immediately after the read.
-.Ss Case D: VMIN = 0, VTIME = 0
+.Ss Case D: MIN = 0, TIME = 0
 The minimum of either the number of bytes requested or the number of
 bytes currently available is returned without waiting for more
 bytes to be input.  If no characters are available, read returns a
@@ -1290,10 +1290,10 @@ If
 .Dv ICANON
 is not set, read requests are satisfied directly from the input
 queue.  A read is not satisfied until at least
-.Dv VMIN
+.Dv MIN
 bytes have been
 received or the timeout value
-.Dv VTIME
+.Dv TIME
 expired between bytes.  The time value
 represents tenths of seconds.  See
 .Sx "Noncanonical Mode Input Processing"