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Lines 4286-4291
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<programlisting>OPTIONS_MULTI= MG1 |
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<programlisting>OPTIONS_MULTI= MG1 |
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OPTIONS_MULTI_MG1= OPT5 OPT6</programlisting> |
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OPTIONS_MULTI_MG1= OPT5 OPT6</programlisting> |
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<para><makevar>OPTIONS_MULTI</makevar> and |
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<makevar>OPTIONS_SINGLE</makevar> can also allow zero |
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choices by including the group in |
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<makevar>OPTIONS_DEFINE</makevar>:</para> |
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<programlisting>OPTIONS_DEFINE= MG1 |
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OPTIONS_MULTI= MG1 |
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OPTIONS_MULTI_MG1= OPT5 OPT6</programlisting> |
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<para>This group then requires at least one |
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<makevar>OPTION</makevar> from <makevar>MG1</makevar> |
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only if the new <makevar>MG1</makevar> |
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<makevar>OPTION</makevar> is selected. Experimentation |
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is encouraged to ensure that this is understood.</para> |
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<para><makevar>OPTIONS</makevar> are unset by default, |
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<para><makevar>OPTIONS</makevar> are unset by default, |
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unless they are listed in |
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unless they are listed in |
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<makevar>OPTIONS_DEFAULT</makevar>:</para> |
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<makevar>OPTIONS_DEFAULT</makevar>:</para> |