The SOLV option is used as part of a SQUEEZE calculation. Some background information may be obtained from the paper Acta Cryst (1990) A46, 194-201.
See further under CALC VOID
The default PROBE and PSTEP values will result in a grid search calculation for Solvent_Accessible_Volumes with grid steps of approximately 0.2 Angstrom.
NOTE: The FFT grid used in SQUEEZE is determined by the Hmax, Kmax & Lmax values (i.e. resolution) of the reflection set, subject to the requirement that the number of gridponts should be a power of two in each direction. The SOLV map SAV values are converted into those for the FFT map.