Civil proceedings in court are adversarial. This means that each party has a duty to find and present their evidence and their arguments.
The court itself will not search for evidence or arguments, but will only follow the law. The judges of the court will decide in favour of the party, which has more convincing legal arguments and evidence to support it. Therefore, it is very important that the parties have equal opportunity to do this.
In principle, this ensures that you have a right to know what evidence and arguments the other party has and to also comment on them. Your opponent has the same right with regard to your evidence. This principle goes hand in hand with the requirement that both parties to the case must be equal.
According to Slovenian law, you and your opponent in civil proceedings have the right to access the case file, submit evidence, participate at the trial, to present your observations and arguments, and to make objections to the requests and arguments of your opponent etc.