  We propose the $\Theta\Phi$ (Theta-Phi) package which addresses two of the
most important extensions of the essentially single-particle mean-field
paradigm of the computational solid state physics: the admission of the
Bardeen-Cooper-Schrieffer electronic ground state and allowance of the
magnetically ordered states with an arbitrary superstructure (pitch) wave
vector. Both features are implemented in the context of multi-band systems
which paves the way to an interplay with the solid state quantum physics
packages eventually providing access to the first-principles estimates of the
relevant matrix elements of the model Hamiltonians derived from the standard
DFT calculations. Several examples showing the workability of the proposed code
are given.
