optiongruppe
optiongruppe › optgruppe
Provenance
- #8 html-forms concept_map 2026-06-24 maps css/optgroup → concept optgroup
- #23 demo-alpha concept_map 2026-07-13 covers concept optgroup winning layer
- #24 html-lowercase-de case_fold 2026-07-14 transform: case-folds the winning display
Concept optgroup
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