It can have the forms
 .LP
 .nf
-       [dn[.<dnstyle>]=]<dnpattern>
+       dn[.<dnstyle>]=<dnpattern>
        filter=<ldapfilter>
        attrs=<attrlist>[ val[/matchingRule][.<attrstyle>]=<attrval>]
 .fi
 The statement
 .B dn=<dnpattern>
 selects the entries based on their naming context.
-The 
-.B dn=
-part is optional.
 The
 .B <dnpattern>
 is a string representation of the entry's DN.
 .LP
 The 
 .B <dnstyle> 
-is also optional; however, it is recommended to specify both the 
-.B dn=
-and the
-.B <dnstyle>
-to avoid ambiguities.
+is optional; however, it is recommended to specify it to avoid ambiguities.
 .B Base 
 (synonym of
 .BR baseObject ),
 
 {
        char *access =
                "<access clause> ::= access to <what> "
-                               "[ by <who> <access> [ <control> ] ]+ \n";
+                               "[ by <who> [ <access> ] [ <control> ] ]+ \n";
        char *what =
-               "<what> ::= * | [dn[.<dnstyle>]=<DN>] [filter=<filter>] [attrs=<attrspec>]\n"
+               "<what> ::= * | dn[.<dnstyle>=<DN>] [filter=<filter>] [attrs=<attrspec>]\n"
                "<attrspec> ::= <attrname> [val[/<matchingRule>][.<attrstyle>]=<value>] | <attrlist>\n"
                "<attrlist> ::= <attr> [ , <attrlist> ]\n"
                "<attr> ::= <attrname> | @<objectClass> | !<objectClass> | entry | children\n";