Yes
No
by permission from author and publisher
If you filled out an application for a job, you signed a paper giving them permission to inquire about you. No other permission is needed.
No you don't. Simple oral permission will suffice.
Not all documents. Some documents you can right-click and 'open with' another program such as Notepad.
A Passport. Another form of ID like a license, social security card, or birth certificate aren't necessary, but don't hurt to have with you just in case.
What can a father do if the mother of. His children took the kids and moved to another state without permission.
Open Office Documents, Wordperfect Documents, Write Documents, RTF files. Depending on the context, if you mean like as in proprietary or made by Microsoft, this could be Excel Documents.
If the court gives permission yes.
Passports give you permission to leave your country, visas are permission from another country that allows you to visit there.
Permission, approval, sanction, consent
If you have their permission, yes. Otherwise, no.