[LUG.ro] \atop en LaTeX

[Janus]

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Alguien puede decirme el porqu=E9 de este error al compilar un .tex en el q=
ue=20
uso el comando \atop?

=46oreign command \atop;(amsmath) \frac or \genfrac should be used=20
instead(amsmath) on input line 717. Foreign command \atop;(amsmath) \frac o=
r=20
\genfrac should be used instead(amsmath)=20

En el pre=E1mbulo del .tex tengo los paquetes AMS:
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}

Compila igual, y me usa \frac que se ve casi igual, pero quiero saber cu=E1=
l es=20
el problema.

Salu2
JANUS

=2D-=20
Janus
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