I've recently seen references to a black tab. E.g.
- BT link to org: https://na2.salesforce.com/00D300000xxxxxx?blacktaboid=00D300000xxxxxx
- BT link to managed package: https://na2.salesforce.com/033400000xxxxxx?blacktaboid=00D300000xxxxxx&tab=PackageComponents
Is this some internal Salesforce functionality?
The extra query string parameters seem to have no affect for me.