Difference between internal/ external checks and rountine checks

Its been 9 months and we havent received our grants.. we got an email from dipb and they said says routine checks.. i wanted to asked what's the difference between routine checks and internal/ external checks... please reply experts...
That generally means don't ask for updates :)
Will it mean that our grants is close or we have to wait longer???
This is a one million dollar question mate :)
Please just give a rough answer farjaf... it would be helpful..
No one knows the answer to ur question mate, ur visa could come tomorrow or after 2 years...
Yea your right.. dont know how the dipb works...hows your progress anyways?? Your offshore as well right
I wish I could know the answer ... call dibp and ask for external check they might tell u if u stuck in security checks
So whats the difference actually between all the checks or they just want to brush off with different answers