The research leading to this report was supported in parts by the Forestry Policy and Planning Division of the Food and Agriculture Organization (FAO) of the United Nations, by Agriculture Cooperative State Research Service grant 95-37400-1851, by McIntire-Stennis grant D946 by the EC-FAO Partnership Programme 1998-2000 - Data Collection and Analysis for Sustainable Forest Management in ACP Countries; Linking National and International Efforts, and by the School of Natural Resources, University of Wisconsin-Madison. We thank Adrian Whiteman for comments on a previous draft of this manual and Chiu-Sheng Liu for his help in programming the output macros. The current version of the Global Forest Products Model (GFPM) would not have been possible without the previous work of Dali Zhang on the GFPM, reported in the FAO Provisional Outlook of Forest Product Production, Consumption, and Trade (FAO, 1997). This document and the GFPM software are the sole responsibility of the authors and do not imply any endorsement by the Food and Agriculture Organization of the United Nations.