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To add 'select' by entity type - line, arc, etc...
I already had the same idea:
- Add an entity filter to the selection menu - ID: 3531880
Currently in actions, we can select with an entity type filter applied:
in drawing inscribed ellipses, only lines are allowed for selection;
in drawing tangential circles, only lines and arc/circles are allowed for selection.
To design a good GUI support is required here.