• W, S — Rotate around OX
• A, D — Rotate around OY
• Q, E — Rotate around OZ
• Z, X — Rotate around custom vector
• R, F — Move observer forward / backwards
• NP_8, NP_2 — Move observer up / down
• NP_4, NP_6— Move observer left / right
• T, G — Move display forward / backwards
• M — Enable / disable invisible lines
• O — Single object scene (SOS)
• P — Multiple objects scene (MOS)
• 1-4 — Switch figures (SOS), add figures (MOS)

Move SDL2.dll to folder with *.exe file