title: LaTeX: How to change one of section numbers to a custom letter?
body: <p>I have something like this:</p>
  
  <pre><code>Section 1
  ...
  Section 2
  ...
  Section 3
  Subsection 3.1
  ...
  Section 4
  ...
  </code></pre>
  
  <p>And I would like to have something like this:</p>
  
  <pre><code>Section 1
  ...
  Section 2
  ...
  Section A
  Subsection A.1
  ...
  Section 4
  ...
  </code></pre>
  
  <p>In other words - change one of section numbers to something else 3 == A
  I need this for my thesis which is written in article class, and when I tried to add appendices the <em>hyperref</em> package broke, and "links" to <em>section 1</em> directed to <em>appendix A</em></p>
  
  <p>edit:
  I made a mistake when describing the problem, I meant that the <em>table of contents</em> doesn't work because LaTeX generates code (*.toc file):</p>
  
  <pre><code>\contentsline {section}{\numberline {1}}{1}{section.1}
  \contentsline {section}{\numberline {2}}{1}{section.2}
  \contentsline {section}{\numberline {A}}{1}{section.1}
  </code></pre>