I have a question about the add-on.xml method. Is it possible to have more than one scenery sections in an add-on.xml file. If yes is it possible to give them a specific order (priority?)

I'm asking because I have downloaded "Hawaii Photoreal". It contains five folders each including a scenery folder. I want to combine all of them in one add-on.xml

Yes, you can have more than one scenery folders in one xml. Their priority in the xml is reversed compared to the scenery library. Entries on the top will be loaded first and entries at the bottom afterwards. Here is an example of FT's Amsterdam with a LC folder that needs to be loaded before the airport folder:

<?xml version="1.0" encoding="utf-8"?>
<SimBase.Document Type="AddOnXml" version="4,0" id="add-on">
  <AddOn.Name>FlyTampa Amsterdam</AddOn.Name>
  <AddOn.Description>FlyTampa Amsterdam</AddOn.Description>  
  <AddOn.Component>
    <Category>Scenery</Category>
    <Path>D:\Prepar3D Add-on\FlyTampa\Amsterdam\scenery\world\scenery</Path>
    <Name>FlyTampa Amsterdam World</Name>
    <Layer>3</Layer>
  </AddOn.Component>  
  <AddOn.Component>
    <Category>Scenery</Category>
    <Path>D:\Prepar3D Add-on\FlyTampa\Amsterdam\Amsterdam_LC\scenery</Path>
    <Name>FlyTampa Amsterdam LC</Name>
  </AddOn.Component> 
  <AddOn.Component>
    <Category>Scenery</Category>
    <Path>D:\Prepar3D Add-on\FlyTampa\Amsterdam\Amsterdam</Path>
    <Name>FlyTampa Amsterdam</Name>
  </AddOn.Component>  
  <AddOn.Component>
    <Category>Effects</Category>
    <Path>D:\Prepar3D Add-on\FlyTampa\Amsterdam\effects</Path>
  </AddOn.Component>
</SimBase.Document>

Thank you.

1 hour ago, Nemo said:

I have a question about the add-on.xml method. Is it possible to have more than one scenery sections in an add-on.xml file. If yes is it possible to give them a specific order (priority?)

I'm asking because I have downloaded "Hawaii Photoreal". It contains five folders each including a scenery folder. I want to combine all of them in one add-on.xml

Of course you can.

I suggest using P4AO (P3Dv4 Addon Organizer), it'll simplify the task a lot:

http://www.lorby-si.com/downloads.html

Cheers, Ed

 

I usually group all my addons by developer, such that all FlyTampa products are in the same add-on.xml file. This is just a personal preference but I've also played with using discovery objects in the add-on.cfg file too so preferences are subject to change.