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<h5 class="subsubsection">15.4.6.8 The Scope Operators <code>::</code> and <code>.</code></h5>

<p><a name="index-scope-853"></a><a name="index-g_t_0040code_007b_002e_007d_002c-Modula_002d2-scope-operator-854"></a><a name="index-colon_002c-doubled-as-scope-operator-855"></a><a name="index-g_t_003a_003a_0040r_007b_002c-in-Modula_002d2_007d-856"></a>
There are a few subtle differences between the Modula-2 scope operator
(<code>.</code>) and the <span class="sc">gdb</span> scope operator (<code>::</code>).  The two have
similar syntax:

<pre class="smallexample">     
     <var>module</var> . <var>id</var>
     <var>scope</var> :: <var>id</var>
</pre>
   <p class="noindent">where <var>scope</var> is the name of a module or a procedure,
<var>module</var> the name of a module, and <var>id</var> is any declared
identifier within your program, except another module.

   <p>Using the <code>::</code> operator makes <span class="sc">gdb</span> search the scope
specified by <var>scope</var> for the identifier <var>id</var>.  If it is not
found in the specified scope, then <span class="sc">gdb</span> searches all scopes
enclosing the one specified by <var>scope</var>.

   <p>Using the <code>.</code> operator makes <span class="sc">gdb</span> search the current scope for
the identifier specified by <var>id</var> that was imported from the
definition module specified by <var>module</var>.  With this operator, it is
an error if the identifier <var>id</var> was not imported from definition
module <var>module</var>, or if <var>id</var> is not an identifier in
<var>module</var>.

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