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-rw-r--r--doc/open.n19
1 files changed, 16 insertions, 3 deletions
diff --git a/doc/open.n b/doc/open.n
index 03e4339..2f3b9f5 100644
--- a/doc/open.n
+++ b/doc/open.n
@@ -5,7 +5,7 @@
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
-'\" RCS: @(#) $Id: open.n,v 1.4 1999/04/16 00:46:35 stanton Exp $
+'\" RCS: @(#) $Id: open.n,v 1.5 1999/07/22 00:06:09 redman Exp $
'\"
.so man.macros
.TH open n 7.6 Tcl "Tcl Built-In Commands"
@@ -144,6 +144,14 @@ number of data bits, and number of stop bits for this serial port. The
``odd'', ``even'', ``mark'', or ``space''. \fIData\fR is the number of
data bits and should be an integer from 5 to 8, while \fIstop\fR is the
number of stop bits and should be the integer 1 or 2.
+.TP
+\fB\-pollinterval \fImsec\fR
+.
+This option, available only on Windows for serial ports, is used to
+set the maximum time between polling for fileevents. This affects the
+time interval between checking for events throughout the Tcl
+interpreter (the smallest value always wins). Use this option only if
+you want to poll the serial port more often than 10 msec (the default).
.VE
.VS
@@ -153,8 +161,13 @@ number of stop bits and should be the integer 1 or 2.
\fBWindows \fR(all versions)
.
Valid values for \fIfileName\fR to open a serial port are of the form
-\fBcom\fIX\fB:\fR, where \fIX\fR is a number, generally from 1 to 4. An
-attempt to open a serial port that does not exist will fail.
+\fBcom\fIX\fB:\fR, where \fIX\fR is a number, generally from 1 to 4.
+This notation only works for serial ports from 1 to 9, if the system
+happens to have more than four. An attempt to open a serial port that
+does not exist or has a number greater than 9 will fail. An alternate
+form of opening serial ports is to use the filename \fB\e\e.\ecomX\fR,
+where X is any number that corresponds to a serial port; please note
+that this method is considerably slower on Windows 95 and Windows 98.
.TP
\fBWindows NT\fR
.