Alexander I. Rozhenko
Add commands to package after it's loaded.
    
      
      Support dynamic counters.
    
      
      Extended “description” lists.
    
      
      A range of dash commands for compound words.
    
      
      Adds footnote levels to standard LaTeX’s footnote mechanism.
    
      
      Fill free space with a pattern.
    
      
      “Poor man’s” blackboard bold.
    
      
      Elaborate box commands.
    
      
      Use comma as decimal separator in mathematics.
    
      
      Crop-marked boxes.
    
      
      Draw cropmarks on the output page.
    
      
      Extensive control of page headers and footers.
    
      
      Extensions of the LaTeX float mechanisms.
    
      
      User-generated footnote marks.
    
      
      An extended general-purpose class.
    
      
      Extended mathematics capabilities.
    
      
      Modify skips between paragraphs.
    
      
      Extend the graphicx package for more formats.
    
      
      Compose dashed lines.
    
      
      A re-implementation of sections, captions and tocs.
    
      
      Insert a stretch between each token of a string.
    
      
      Another theorem environment.
    
      
      A collection of general packages for LaTeX.
    
      
      Control the text area dynamically.
    
      
      Centring (and other) Page Layout.
    
      
      An un-numbered top level section.
    
      
      Draw “watermarks” on the output page.