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-rw-r--r--hw/xwin/man/XWin.man9
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/xwin/man/XWin.man b/hw/xwin/man/XWin.man
index 631c5fe07..628420018 100644
--- a/hw/xwin/man/XWin.man
+++ b/hw/xwin/man/XWin.man
@@ -181,6 +181,15 @@ Use Composite extension redirection to maintain a bitmap image of each top-level
X window, so window contents which are occluded show correctly in task bar and
task switcher previews.
The default is enabled.
+.TP 8
+.B \-[no]compositealpha
+X windows with per-pixel alpha are composited into the \fIWindows\fP desktop
+(i.e. a \fIWindows\fP window can be seen through any transparency in an X window
+placed over it).
+
+This option has no effect on Windows 8 and 8.1.
+This option has no effect if \fB-compositewm\fP is disabled.
+The default is disabled.
.SH OPTIONS CONTROLLING WINDOWS INTEGRATION
.TP 8