Index: trunk/doc/developer/alien_formats/io_altium/model.txt
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--- trunk/doc/developer/alien_formats/io_altium/model.txt	(nonexistent)
+++ trunk/doc/developer/alien_formats/io_altium/model.txt	(revision 35545)
@@ -0,0 +1,2 @@
+union index: placement grouping, mainly for components
+user routed: when explicitly false, the object is placed by the autorouter