# Intermediate Lateral Restraint

### Glossary Term

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This term describes additional restraints that can be defined between supports. These are particularly important for the calculation of the elastic critical buckling moment Mcr in the case of lateral-torsional buckling.
In general, it is possible to enter a lateral support (in the y‑direction), a restraint (about the x‑axis) and eccentricity (in the z‑direction) as rigid or as a spring.