Here is an example of the complexities of Hilchos Shvuos, excerpted from an actual sworn oath:
What does the above mean? Please translate and explain each expression.
It is a declaration discounting any attempt to invalidate a vow, in order to make the vow absolutely binding with no way out.
גילוי דעת - One can perform actions that show that a vow is not really meant, by acting in such a way as to show the vow is unintended. A possible example would be shaking your head no as you say it.
תנאי - One can make a condition based on which a vow is binding, such as "If I eat cheese tomorrow then the vow I am about to make is binding, but if not then it is not binding."
מודעה - one can be מוסר מודעה, make a declaration that what they are about to do is not being done seriously or is being forced upon them to do.