 ephemeral and only one selection exists at a time, much like a selection in a spreadsheet program. There is no quick way to save or recall a selection, so if you want to do something very complicated it is best to do it a bit at a time.
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<div id="org6e27937" class="figure">
<p><img src="./../screenshots/selected.png" alt="selected.png" />
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<p><span class="figure-number">Figure 2: </span>Difference in appearance due to selection. On the left nothing is selected, on the right the top-left building 