Add dangling entity note
@@ -14,7 +14,7 @@ For example, to remove all descendants of 'assay' from OBI:
robot remove --input obi.owl --term OBI:0000070 --select descendants
```
-`remove` also includes a `--trim` option, set to `true` by default. For an axiom to be removed, *one or more* of the entities in that axiom must be in the removal set. If `--trim false` is specified, *all* entities in the axiom must be in the selected set of terms.
+`remove` also includes a `--trim` option, set to `true` by default. For an axiom to be removed, *one or more* of the entities in that axiom must be in the removal set. If `--trim false` is specified, *all* entities in the axiom must be in the selected set of terms. Dangling entities (entities without any axioms *about* them) will also be removed when `--trim` is `true`.
If you are removing import statements and wish to keep references to imported terms, use `--trim false`. Otherwise, the dangling entities left over from removing the imports will also be removed.
