MOSS FullTextSqlQuery API: Little Known Flags on Managed Properties

SELECT
UserProfile_GUID, PreferredName, JobTitle, Department, WorkPhone, OfficeNumber,
AboutMe, PictureURL, WorkEmail, WebSite, Path, HitHighlightedSummary,
HitHighlightedProperties, Responsibility, Skills, SipAddress
FROM scope()
WHERE freetext(defaultproperties,'+trent')
AND ("scope" = 'People')
AND CONTAINS(Skills, '"numchucks"')
AND CONTAINS(Skills, '"rockstar"')

    using Microsoft.Office.Server;
    using Microsoft.Office.Server.Search.Administration;
 
    private void EnsureFullTextQueriableManagedProperties(ServerContext serverContext, params string[] managedPropertyNames)
    {
        var schema = new Schema(SearchContext.GetContext(serverContext));
        foreach (ManagedProperty managedProperty in schema.AllManagedProperties)
        {
            if (!managedPropertyNames.Contains(managedProperty.Name))
                continue;
 
            if (managedProperty.FullTextQueriable)
                continue;
 
            try
            {
                managedProperty.FullTextQueriable = true;
                managedProperty.Update();
                Log.Info(m => m("Successfully set managed property {0} to be FullTextQueriable", managedProperty.Name));
            }
            catch (Exception e)
            {
                Log.Error(m => m("Error updating managed property {0}", managedProperty.Name), e);
            }
        }
    }