On 25 November 2010 10:47, Shmuel Metz (Seymour J.)
<shmuel+ibm-m...@patriot.net> wrote:
> In <aanlktimk8gdnepidhrssqbdcwpj_xr4anvg-gmr1a...@mail.gmail.com>, on
> 11/24/2010
>   at 01:15 PM, Tony Harminc <t...@harminc.net> said:
>
>>I think you are confusing REXX environments with REXX Host Command
>>Environments.
>
> Then what do you mean by HCE?

A REXX environment is initialized by one of several means, and is
represented by a REXX environment block (macro IRXENVB). It has one or
more host command environments available to it. A host command
environment is an xyz that you can issue "Address xyz" to while
running in a given REXX environment, and is named by an entry in the
Subcommand Table (macro IRXSUBCT), which can be statically loaded and
dynamically updated (though with a performance hit). IBM's terminology
for both these is a little inconsistent, but they are clearly
different things.

Tony H.

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