The Republic of the Philippines and the Republic of Indonesia, in furtherance of the friendly relations existing between them and desiring to conclude an Agreement providing for the treatment which shall be accorded the nationals of each Contracting Party who are illegally in the territory of the other, and establishing, on a reciprocal basis, a more expeditious and simplified system of control for the entry and exit of the nationals of each of the Contracting Parties living within the specified Border Area of such Contracting Party and intending to make visits of limited duration to the corresponding Border Area of the other Contracting Party, have designated for this purpose the undersigned Plenipotentiaries who, after communicating to each other their respective full powers, found in good and due form, have agreed as follows . . .