[en] Over the last several years, profile data from nine different tokamaks have been stored in the magnetic fusion energy database (MFEDB). These data sets have come from a variety of sources and most are given in different coordinate systems. In order to attempt any intermachine analysis, it is convenient to transform these data sets into one generic coordinate system and to choose a uniform set of variable names. The authors describe the data sets from each tokamak indicating the source of the data and the coordinate system in which it is given. Next, they discuss the generic coordinate that has been adopted and show how it is implemented for each tokamak. Finally, the generic naming convention that has been adopted is discussed. It follows closely that which was used by Christiansen et al. for the ITER Global Energy Confinement H-Mode Database. For further clarification, they discuss the characteristics of the magnetic geometry given a Fourier representation of the magnetic equilibria