Drew Adams [2016-01-02 08:46:17-08] wrote:

> How about posting multiple versions of the Emacs doc on line?

A great example: PostgreSQL. Its documentation pages have a navigation
line with links that take user to the same (sub)page in different
PostgreSQL versions.

    This page in other versions: 9.1 / 9.2 / 9.3 / current (9.4) |
    Development versions: devel / 9.5 | Unsupported versions: 8.2 / 8.3
    / 8.4 / 9.0

For example, section "9.9. Date/Time Functions and Operators" for
PostgreSQL 9.4:
http://www.postgresql.org/docs/9.4/static/functions-datetime.html

Click a different version number in the navigation line and you stay in
the same section, just another PostgreSQL version.

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/// Teemu Likonen   - .-..   <https://github.com/tlikonen> //
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