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diff --git a/readme.md b/readme.md
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@@ -168,7 +168,7 @@ the amount of `x` which exist; *or, if* `x` *is a list*: the amount of items in
 all of the elements of list `x`
 
 ### `:_`
-`z`, as defined in the word list; *this operator is equivalent to `x::=X`
+`z`, as defined in the word list; *this operator is equivalent to* `x::=X`
 
 ## clarification: the meaning of `*_x`
 the difference between `*_x` and `x` can be thought of like this: if `x` is "dog"/"dogs", then `*_x` is "some dogs" or "a dog". the difference becomes quite relevant when one performs definitions.