<membership defaultProvider="wwdllMembershipProvider" userIsOnlineTimeWindow="15"> <providers> <add name="wwdllMembershipProvider" type="wwdllMembershipProvider" enablePasswordRetrieval="false" enablePasswordReset="false" writeExceptionsToEventLog="false"/> </providers> </membership> <profile> <providers> <clear/> <add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/"/> </providers> </profile> <roleManager enabled="false"> <providers> <clear/> <add name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/"/> <add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/"/> </providers> </roleManager>First of all, what
<clear/ >means here?