doc string of `format' - FLAGS unexplained

[Drew Adams]

The doc string includes this:
 
 The basic structure of a %-sequence is
   % <flags> <width> <precision> character
 where flags is [-+ #0]+, width is [0-9]+, and precision is .[0-9]+
 
But there is absolutely no explanation of what FLAGS, WIDTH, and
PRECISION mean.  One might be able to guess for WIDTH and PRECISION,
but not for FLAGS.  Please include some of the explanation from the
Elisp manual, adapting it as needed.
 
Also, the EMACS convention for doc strings is to use uppercase: FLAGS,
not angle brackets: <flags>.
 
 
 

In GNU Emacs 22.1.1 (i386-mingw-nt5.1.2600)
 of 2007-06-02 on RELEASE
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -Ic:/gnuwin32/include'