some wording changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77443 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LangRef.html b/docs/LangRef.html
index e3e710b..2589771 100644
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -3917,7 +3917,7 @@
 
 <h5>Arguments:</h5>
 <p>The first argument is always a pointer, and forms the basis of the
-   calculation. The remaining arguments are indices, that indicate which of the
+   calculation. The remaining arguments are indices that indicate which of the
    elements of the aggregate object are indexed. The interpretation of each
    index is dependent on the type being indexed into. The first index always
    indexes the pointer value given as the first argument, the second index
@@ -3929,9 +3929,10 @@
    calculation.</p>
 
 <p>The type of each index argument depends on the type it is indexing into.
-   When indexing into a (packed) structure, only <tt>i32</tt> integer
+   When indexing into a (optionally packed) structure, only <tt>i32</tt> integer
    <b>constants</b> are allowed.  When indexing into an array, pointer or
-   vector, integers of any width are allowed (also non-constants).</p>
+   vector, integers of any width are allowed, and they are not required to be
+   constant.</p>
 
 <p>For example, let's consider a C code fragment and how it gets compiled to
    LLVM:</p>