.. SPDX-FileCopyrightText: 1992-2026 NWO-I/SRON Space Research Organisation Netherlands .. .. SPDX-License-Identifier: CC-BY-4.0 Fortran API Interface ===================== Introduction ------------ The SPEX Fortran interface provides access to all X-ray spectral analysis capabilities through an object-oriented Fortran API. This interface serves as the foundation for both the interactive SPEX command prompt and the Python interface, offering direct control over all SPEX functionality. Contents -------- .. toctree:: :maxdepth: 2 fortranapi/using/using fortranapi/spexapi/spexapi