#LyX 1.6svn created this file. For more info see http://www.lyx.org/
\lyxformat 318
\begin_document
\begin_header
\textclass article
\language english
\inputencoding auto
\font_roman default
\font_sans default
\font_typewriter default
\font_default_family default
\font_sc false
\font_osf false
\font_sf_scale 100
\font_tt_scale 100
\graphics default
\paperfontsize default
\use_hyperref false
\papersize default
\use_geometry false
\use_amsmath 1
\use_esint 1
\cite_engine basic
\use_bibtopic false
\paperorientation portrait
\secnumdepth 3
\tocdepth 3
\paragraph_separation indent
\defskip medskip
\quotes_language english
\papercolumns 1
\papersides 1
\paperpagestyle default
\tracking_changes false
\output_changes false
\author "" 
\author "" 
\extra_embedded_files ""
\end_header

\begin_body

\begin_layout Standard
This is the child document 
\begin_inset Formula $1$
\end_inset

.
 It overwrites the macro 
\begin_inset Formula $\foo$
\end_inset


\begin_inset Foot
status open

\begin_layout PlainLayout
(should be 
\begin_inset Formula $A$
\end_inset

 in LyX and after first inclusion in TeX).
\end_layout

\end_inset

 
\begin_inset FormulaMacro
\renewcommand{\foo}{A1}
\end_inset


\begin_inset Formula \[
\foo\mbox{ should be }A1\]

\end_inset


\end_layout

\end_body
\end_document