isql.1: Add information about handling passwords containing semicolons

man/isql.1

@@ -39,6 +39,10 @@ Password required to access the database for the specified \fBUSER\fR.
 This parameter overrides any \fBPASSWORD\fR specified in the data source
 configuration files.
 
+When using \fBiusql\fR, passwords containing semicolons should be escaped with
+braces (curly brackets) and terminated with a semicolon. Refer to the Examples
+section below for syntax.
+
 .SH OPTIONS
 
 .IP \fB\-b\fR
@@ -144,6 +148,16 @@ A string DSN may be provided in its entirety, with no file DSN reference at all:
 $ iusql ";Driver=PostgreSQL Unicode;UID=MyID;PASSWORD=secret" \-v
 .fi
 
+.IP "A password containing a semicolon (\fBiusql\fR):"
+
+.nf
+$ iusql WebDB MyID '{My;PWD};'
+.fi
+
+.nf
+$ iusql 'DSN=WebDB;UID=MyID;PWD={My;PWD};'
+.fi
+
 .SH TROUBLESHOOTING
 
 .IP "Cryptic error messages"