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    <p>Yes, raising an Error would be better in my opinion.</p>
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    <p>   Mariano<br>
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    <div class="moz-cite-prefix">El 18/8/24 a las 16:31, Mark Volkmann
      via Cuis-dev escribió:<br>
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cite="mid:CAFfRWnWzFNWciJVxxNdsFTRJ6Oh-G0QbVpf+q8KLqJp_JgwS=g@mail.gmail.com">
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      <div dir="ltr">If a package is installed that defines subclasses
        of classes that are defined in packages that have not been
        installed yet, their superclass will be changed to <font
          face="monospace">ProtoObject</font>. No warning message about
        this will be displayed.
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        <div>For example, suppose the UI-Entry package is not installed.</div>
        <div>That defines the class <font face="monospace">TextEntryMorph</font>.</div>
        <div>If I install a package that defines the following class</div>
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        <div><font face="monospace">TextEntryMorph subclass:
            #CenteredTextEntryMorph</font></div>
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        <div>that will be changed to</div>
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            <div><font face="monospace">ProtoObject subclass:
                #CenteredTextEntryMorph</font></div>
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          <span class="gmail_signature_prefix">-- </span><br>
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                        <div><font face="arial, helvetica, sans-serif">R.
                            Mark Volkmann</font></div>
                        <div><span style="font-size:12.8000001907349px"><font
                              face="arial, helvetica, sans-serif">Object
                              Computing, Inc.</font></span></div>
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