anchor.diff:    paths. _Making decisions is slow._
   
   To restate, Ninja is faster than other build systems because it is
  -painfully simple.  You must tell Ninja exctly what to do when you
  +painfully simple.  You must tell Ninja exactly what to do when you
   create your project's `.ninja` files.
   
   Comparison to GNU make
  
positive.code: cflags = -g
  ----------------
  
  can be used on the right side of an equals sign, deferencing it with
  a dollar sign, like this:
  
  ----------------
  
negative.code: Creating .ninja files
  ---------------------
  Here's a basic `.ninja` file that demonstrates most of the syntax.
  It will be used as an example for the following sections.
  
  ---------------------------------
  cflags = -Wall
  