Some aspects of the theory of relativistic string in its early period of formation and development are examined, such as the analogy between multilocal theory and string theory, the motivation and implication of the concept of `detailed wave equation', distinction between geometric and massive strings, etc. Next it is shown that a multilocal system consisting of N points organizes itself into a one-dimensional arrangement, rather than into a 3-dimensionally extended structure, if the internal forces obey a certain conspicuous rule. This model exhibits how the string theory is fabricated out of the relativistic theory of a discrete structure in the limit N →∞.