Editing De Vrienden (section)

== Formation and internal structure ==
[[Angelo Noord]] and [[Martin Paap]] formed the initial core of De Vrienden in 1974. Both were adolescents at the time. Imro van Hetten joined in early 1975 as the third member. Lourens Schroeter became associated with them later that year. He was the oldest member of the group. Eef Hoos joined in 1976 as the fifth person to enter the association, completing the group of five.<ref name="formation"/>

Informal roles developed during the group's early years. Noord organized its internal records and documented its activities. Paap took the initiative during group activities and was associated with direct action. Van Hetten was treated as a stabilizing member. Schroeter provided logistical and material support. Hoos entered after these roles had begun to develop and became part of the completed group structure.<ref name="member-roles"/>

Around 1980, De Vrienden formalized a numerical system that associated each member and family with a fixed number. The resulting order was:

# [[Angelo Noord]] 
# [[Martin Paap]] 
# [[Imro van Hetten]] 
# [[Eef Hoos]] 
# [[Lourens Schroeter]]

This arrangement differed from the chronological joining order. Schroeter had joined before Hoos and had initially been regarded as the fourth member. The later numerical structure assigned the Hoos family the number four and the Schroeter family the number five. These associations later affected symbolic preferences concerning numbering in [[Rotterdam-West]] and [[Rotterdam-Zuid]].<ref name="numerical-order"/>