• Ctrl + plus or minus key ─ Upscale or downscale the UI size.
• 5 ─ Reset camera to 45-degree views.
• 7 ─ Save camera view.
• 8 ─ Restore saved camera view.
• Cursor / PageUp / PageDown ─ Move selection.
• F / G / H ─ Change gizmo space type.
• 1 / 2 / 3 / 4 ─ Change gizmo scale type.
• Shift + drag a gizmo handle ─ Duplicate.
• Right-click on layer ─ Rename input field pop-up.
Check the similar MagicaVoxel keyboard shortcuts for shortcuts that might also work in MagicaCSG.