text: support from the State as well as from private sources, to achieve the physical, economic, social and political benefits offered to the city. Such nuclei will be characterized by: E/1986/4/Add.25 paqe 21 - Evolutive housing allowing changes in the cultural requirements and payment capacity of the families concerned to be reflected in changes in the size and quality of the housing. Community solutions to the problems of urban services which ensure that they are effectively integrated into the city's formal structure in terms of highway and transport networks, services, drinking water, drainage of rainwater and sewage, the provision of gas and electricity, telephone and mail services. Subprogramme; Rehabilitation of sub-standard urban housing Subprogramme; Improvement and remodelling of built-up urban areas which already possess services Social progranme; Welfare hostels This programme has made it possible to provide care for 195,000 children in 13,000 family hostels located among the poorest sectors of Colombia's population. The strategy is a particularly effective means of ensuring the organization and involvement of the community as the financial and physical resources necessary to carry out the programme are entrusted directly to parents' organizations. The programme constitutes a large-scale popular training programme covering large sectors of the population which provides training in the administration of funds and provision of care to children. The possibility for each community to develop its own specific marketing networks has allowed suppliers, shopkeepers, small traders and producers to organize themselves on the basis of their community. As a result, small community organizations for the production and distribution of inputs and food have come into being, thereby creating fresh economic resources and even employment. As an example of income improvement it is worth mentioning the grants made by the Government to children which are distributed by the Associations to thank the mothers in their communities for 
analysis: The text discusses the implementation of a program aimed at improving the living conditions of the poorest sectors of Colombia's population. The program focuses on providing physical, economic, social, and political benefits to the community, including housing, urban services, and economic opportunities. The text highlights the community's involvement in the program, with parents' organizations taking charge of the financial and physical resources necessary to carry out the program.