[lemma=feature] [□] □
[lemma=feature] [□ | □] □
[lemma=feature] [□ & □] □
A diagram of the overarching project implementation with the three complementary design features is shown in Figure A1 . All six of these features are incorporated in the Institutes presented by NCTM 's Academy for Professional Development . No structural evidence was found in the excavation unit , but at 140 cm , a fire pit feature was encountered . This implies that the feature is safe and supported in virtually all cases . Products with a " free look " feature are also considered to be especially at risk .