  This text is a commentary on the paper "On some ideals of differentiable
functions" of Ren{\'e} Thom which appeared in Volume II of his "Oeuvres
Math{\'e}matiques" published by the Soci{\'e}t{\'e} math{\'e}matique de France,
s{\'e}rie "Documents Math{\'e}matiques", in 2019.
