Add comments for cube triangulation #99

Job	Run time
initial_checks / Load tox environments	4s
initial_checks / codestyle (ubuntu-latest)	13s
deploy-examples	0s
tests / Load tox environments	6s
tests / py39-test (ubuntu-latest)	3m 14s
tests / py310-test (ubuntu-latest)	2m 53s
tests / py311-test (ubuntu-latest)	3m 7s
tests / py312-test (ubuntu-latest)	3m 10s
tests / py39-test (macos-12)	9m 1s
tests / py310-test (macos-latest)	3m 44s
tests / py311-test (macos-latest)	3m 53s
tests / py312-test (macos-latest)	3m 57s
tests / py39-test (windows-latest)	6m 6s
tests / py310-test (windows-latest)	5m 58s
tests / py311-test (windows-latest)	4m 56s
tests / py312-test (windows-latest)	5m 7s
	55m 29s

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