This report describes the inverse electro- and magnetostatic program Inesma 2.0. The inverse problem is formulated as a non-linear least squares problem that is solved with a constrained quasi-Newton like method. The static electric or the static magnetic field is modelled with either monopoles or dipoles in a horizontally stratified three-layer model consisting of air, water and seabed. The reference field is generated from a synthetic model or read from file. The output from Inesma is a source distribution that locally minimises the costfunction. The initiation files, the log files, and the results file are thoroughly described and illustrated. Worked examples are given on a synthetic electric and a synthetic magnetic signature. The initial source distribution is generated with the help program Init_pos in ´Inesma example 1´, whereas the sources are interactively positioned while the program is running in ´Inesma example 2´.