Again you are missing the point, its up to Army Chief what he wanted to do? Make sense? Lets say their are really such a rules or power existed? Will rest of nation should know about it ? or only few power brokers?
Their is secret act in constitution, some says it just regarding secret document or state secrets,..
I don't believe this gibberish Army take over the country with man power, with just 600000 men !..
What you are saying, I take it as "conspiracy theories" and just one of them... PEROID... The rest is all noise. The constitution of Pakistan is available on the net the rest is all mobo jombo, the example of Shri Jehangir Karamat was the top up.