All three variants allow many parameters

docs/odata-url-conventions/odata-url-conventions.html

@@ -1052,10 +1052,10 @@ <h4 id="5115-string-and-collection-functions"><a name="StringandCollectionFuncti
 <h5 id="51151-concat"><a name="concat" href="#concat">5.1.1.5.1 <code>concat</code></a></h5>
 <p>The <code>concat</code> function has three overloads, with the following signatures:</p>
 <pre><code>Edm.String concat(Edm.String,...,Edm.String)
-Collection concat(Collection,Collection)
-OrderedCollection concat(OrderedCollection,OrderedCollection)</code></pre>
+Collection concat(Collection,...,Collection)
+OrderedCollection concat(OrderedCollection,...,OrderedCollection)</code></pre>
 <p>The <code>concat</code> function with string parameter values returns a string whose value is the combined text of the strings provided.</p>
-<p>The concat function with collection parameter values returns a collection that appends all items of the second collection to the first. If both collections are ordered, the result is also ordered.</p>
+<p>The concat function with collection parameter values returns a collection whose items are the items of the collections provided. If all provided collections are ordered, the result is also ordered.</p>
 <p>The <code>concatMethodCallExpr</code> syntax rule defines how the <code>concat</code> function is invoked.</p>
 <div class="example">
 <p>Example 69: all customers from Berlin, Germany</p>

docs/odata-url-conventions/odata-url-conventions.md

@@ -1981,16 +1981,16 @@ signatures:
 
 ```
 Edm.String concat(Edm.String,...,Edm.String)
-Collection concat(Collection,Collection)
-OrderedCollection concat(OrderedCollection,OrderedCollection)
+Collection concat(Collection,...,Collection)
+OrderedCollection concat(OrderedCollection,...,OrderedCollection)
 ```
 
 The `concat` function with string parameter values returns a string whose
 value is the combined text of the strings provided.
 
 The concat function with collection parameter values returns a
-collection that appends all items of the second collection to the first.
-If both collections are ordered, the result is also ordered.
+collection whose items are the items of the collections provided.
+If all provided collections are ordered, the result is also ordered.
 
 The `concatMethodCallExpr` syntax rule defines how the `concat` function
 is invoked.

odata-url-conventions/5 Query Options.md

@@ -540,16 +540,16 @@ signatures:
 
 ```
 Edm.String concat(Edm.String,...,Edm.String)
-Collection concat(Collection,Collection)
-OrderedCollection concat(OrderedCollection,OrderedCollection)
+Collection concat(Collection,...,Collection)
+OrderedCollection concat(OrderedCollection,...,OrderedCollection)
 ```
 
 The `concat` function with string parameter values returns a string whose
 value is the combined text of the strings provided.
 
 The concat function with collection parameter values returns a
-collection that appends all items of the second collection to the first.
-If both collections are ordered, the result is also ordered.
+collection whose items are the items of the collections provided.
+If all provided collections are ordered, the result is also ordered.
 
 The `concatMethodCallExpr` syntax rule defines how the `concat` function
 is invoked.