t / t4034 / ada / preon commit checkout: advice how to get out of detached HEAD mode (af9ded5)
   1Ada.Text_IO.Put_Line("Hello World!");
   21 1e-10 16#FE12#E2 3.141_592 'x'
   3a+b a-b
   4a*b a/b
   5a**b
   6a(b)
   7a:=b
   8a=b a/= b
   9a<b a<=b a>b a>=b
  10a,b
  11a=>b
  12a..b
  13a<>b