Index: tip/550.md
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--- tip/550.md
+++ tip/550.md
@@ -26,19 +26,27 @@
 predetermined, as their name needs to be saved into a variable (or put inside
 a list or other data-containing value) already in order for them to be usable.
 
 # Specification
 
-When the `new` method of `oo::class` is called, it picks a new unused name
-currently. This behaviour shall be extended so that when the final reference
-from Tcl code to that name is lost (which shall be determined through
-mechanisms such as reference counting) the object will be deleted.
+When the **new** method of **oo::class** is called (and hence by default for
+any class that doesn't override it), it picks a new unused name currently.
+This behaviour shall be extended so that when the final reference from Tcl
+code to that name is lost (which shall be determined through mechanisms such
+as reference counting) the object will be deleted.
 
 Each use of `self object` (or its common alias `self`) within the object shall
 create another reference to the object. Looking it up through mechanisms such
 as `info class instances` shall create another reference to the object (while
 it exists).
+
+Renaming a garbage-collectable object (to any name) stops it from being
+garbage collected, just as if it had been manufactured with **create**.
+Objects with explicit names (which includes all classes themselves under
+normal circumstances) are assumed to be not garbage collected, as the names
+could be used in source code directly, without having been obtained from a
+creation method.
 
 Instances may also be explicitly deleted through all existing mechanisms.
 After that, those existing references will be treated as if they were plain
 strings.