@dorin Now I got it. The Paste Special feature works. I drew the balcony railing by a repetition of green posts of 2 cm time 5 cm, and 100 cm in height, and lay a railing on top of it. For the repetition, I used your plugin.

Thanks!

I forgot to mention my Java version:

<r>Several weeks later, I found time to try. Starting it, I get a Java runtime error when clicking on the menu item:<br/>
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<CODE><s>[code]</s><i>
</i>Exception in thread "AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
at java.base/jdk.internal.util ...

<t>How to draw a balcony railing?<br/>
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I have tested with two different concept, none of them with success.<br/>
<br/>
First I wanted to draw with some kind of repeating pattern. This pattern needs to be transparent between the columns and the top of the railing. There is none in the standard ...

When my plan was nearly ready, I realised that I forgot a corner. I drew the additional two walls, but now I need to modify the polygon of the floor. I needs an additional node. How can I do this without deleting and re-drawing the room?

<r>First of all, I am sorry if I am posting the same question a hundredth time, but I could not find it in the forum. Also, I have already tried several configurations with no success.<br/>
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My problem is:
<LIST><s>[list]</s>
<LI><s>[*]</s>The option <CODE><s>[code]</s>-Dsun.java2d.opengl<e ...