Plugin Description

[xoft]

We don't need a separate plugin for that, we can make a source file that will expect this table to be called g_PluginInfo and will export them. Easy.
As for the doubleslash commands, even that is possible, although it looks a bit worse:

Commands =
{
  ["/set"] = { ... }
}

I think the categories should be a "member variable" for each command; this way a command doesn't need to be in a category, or could be in multiple categories at once; the exporting code would take care of that. And the categories could get a separate description, too:

g_PluginInfo =
{
  ...
  Commands =
  {
    descend =
    {
      Category = "Navigation";
      Permission = "..."; ...
    },
    ...
  },
  CommandCategories =
  {
    Navigation =
    {
      Desc = "Commands in this category will teleport a player to various important places";
    },
    ...
  },
};