diff --git a/docs/src/guides/blockingandyielding.md b/docs/src/guides/blockingandyielding.md
index 09ef620..b1aa47a 100755
--- a/docs/src/guides/blockingandyielding.md
+++ b/docs/src/guides/blockingandyielding.md
@@ -46,4 +46,6 @@ As you can see `Resource` shares some properties with `ReentrantLock` and avails
 
 `take!` and `unlock` are both implemented on top of the lower level `get`.
 
-The `Base.lock` and `Base.unlock` are aliased to `ConcurrentSim.request` and `ConcurrentSim.release` respectively for semantic convenience when working with `Resource`. 
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+The `Base.lock` and `Base.unlock` are aliased to `ConcurrentSim.request` and `ConcurrentSim.release` respectively for semantic convenience when working with `Resource`. 
+
+`unlock(::Resource)` is instantaneous so the `@yield` is not strictly necessary. Similarly for `put!(::Store)` if the store has infinite capacity.
\ No newline at end of file