Where are usages like "== 2L" documented?

On Mon, Nov 16, 2009 at 7:25 PM, Duncan Murdoch <murdoch at stats.uwo.ca> wrote:

On 16/11/2009 6:47 PM, Steven McKinney wrote:

?NumericConstants

will bring up a help page that mentions
"All other numeric constants start with a digit or period and are either a
decimal or hexadecimal constant optionally followed by L."

and

"An numeric constant immediately followed by L is regarded as an integer
number when possible (and with a warning if it contains a "."). "

but I haven't found discussion of it anywhere else in the help pages.
Others may know what other help pages discuss this.

I'm surprised that the help page invoked from
?integer
does not discuss this.  Anyone know why not?

This is part of the syntax of the language.  It has nothing to do with the
integer() function, which is what ?integer is asking about.

It might be useful to have a SeeAlso to NumericConstants on that help
page for those who looked up ?integer thinking it might be about
integer constants.