View > Perspective Grid > One/Two/Three Point Perspective list the built-in views
([1P/2P/3P-Normal View], plus Low and High views generated in code) and the saved
presets of each type; Save Grid as Preset... and Define Grid's Preset menu and Save
Preset... save the fields. Edit > Perspective Grid Presets... (previously a
mislabelled reset to the two-point grid) manages them: New, Edit, Delete, Import,
Export (.vcperspective), stored with the preferences. New commands
perspective.presets.list/save/delete/export/import; perspective.grid.preset takes
a preset name. Preset import is fuzzed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>