anchor.diff:  
   == Macros
   
  -Macros can be included in the body of an Asciidoc-LaTeX
  -file using the `texmacro` environment, as in the example
  -below.
  +Macros can be included in the body of an AsciiDoc-LaTeX file using the `texmacro` environment, as in the example below.
   
   ----
   
  
positive.code: 
  
  ifndef::env_standard[]
  == Asciidoc-LaTeX environments
  
  Asciidoc-LaTeX supports an `env` construct that maps to LaTeX environments.
  Thus
  ----
  [env.theorem]
  --
  There exist infinitely many prime numbers.
  --
  ----
  renders as an automatically numbered theorem:
  
  
  [env.theorem]
  --
  
negative.code: --
  
  endif::[]
  