add switch widget to the manual

data/yad.1

@@ -538,6 +538,8 @@ Add field to form. Type may be \fIH\fP, \fIRO\fP, \fINUM\fP, \fICHK\fP, \fICB\fP
 .br
 \fBSCL\fP - scale field. Value of this field in a range 0..100.
 .br
+\fBSW\fP - switch field. Initial value is a case insensitive boolean constant (\fITRUE\fP or \fIFALSE\fP).
+.br
 \fBAPP\fP - application selection button. Input value for this field is mime-type. Output value - executable for selected application.
 .br
 \fBICON\fP - icon field. Like average entry field but has two icons. Left shows current icon and right is clickable and calls \fIyad-con-browser\fP for choosing icon.