diff --git a/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml b/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml index 2e6dc4b966..fb4066258b 100644 --- a/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml +++ b/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml @@ -3575,6 +3575,14 @@ OPT6_DESC= Describe OPT6</programlisting> <programlisting>OPTIONS_SINGLE= SG1 OPTIONS_SINGLE_SG1= OPT3 OPT4</programlisting> + + <warning> + <para>There <emphasis>must</emphasis> be one of each + <literal>OPTIONS_SINGLE</literal> group selected at all + time for the options to be valid. One option of each + group <emphasis>must</emphasis> be added to + <varname>OPTIONS_DEFAULT</varname>.</para> + </warning> <para><varname>OPTIONS</varname> can be grouped as radio choices, where none or only one choice from each group