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@@ -206,7 +206,7 @@ which is 64KiB on all engines (though large page support may be added in
the [future](FutureFeatures.md#large-page-support)).
* `grow_memory` : grow linear memory by a given unsigned delta which
- must be a multiple of the page size.
+ must be a multiple of the page size. Return the previous memory size.
As stated [above](AstSemantics.md#linear-memory), linear memory is contiguous,
meaning there are no "holes" in the linear address space. After the