To change the contents of Complex:
1. To remove a Species from the Complex:
Select the SpeciesAlias inside the target Complex, then remove it from the Complex box.
2. To add a Species into the Complex:
Select the SpeciesAlias you want to add and drag it into the Complex box.
You can adjust the size of the Complex box to accommodate the newly added Species. 
You can place SpeciesAliases wherever you like inside the Complex box. There is no significance in positions of the SpeciesAliases.
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