flymake: Running the syntax check

 
 3.2 Running the syntax check
 ============================
 
 When ‘flymake-mode’ is active, syntax check is started automatically on
 any of the three conditions mentioned above.  Syntax check can also be
 started manually by using the
 ‘flymake-start-syntax-check-for-current-buffer’ function.  This can be
 used, for example, when changes were made to some other buffer affecting
 the current buffer.