Description:
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From manual page: http://www.php.net/configuration.file
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Currently states, in 'Example #2' -----

; any text on a line after an unquoted semicolon (;) is ignored
[php] ; section markers (text within square brackets) are also ignored
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This conflicts with the 'ini-sections' feature which *does* parse content contained in square brackets, (presumably only if the content starts with 'HOST=' or 'PATH=').  Not sure if there are other section headings that also have special meaning.

http://php.net/manual/en/ini.sections.php

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Also a separate, minor style issue: the following acronyms are mentioned on the configuration.file doco' page without explanation. It would be good if they had the same helpful mouse-over hints that are shown for 'CGI' and 'CLI' --
- SAPI (Server Application Programming Interface)
- NSAPI (Netscape (web) Server Application Programming Interface)
- THTTPD (tiny/turbo/throttling HTTP server)
- OS (this could probably just be expanded outright)

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Expected result:
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Suggested wording to add:

<h3>Section Markers</h3>

Section markers (text within square brackets) are generally ignored, except when they match the configuration directives listed in <a href=ini.sections.php>ini.sections</a>.  For example '[HOST=<host>]' and '[PATH=<path>]' were added in 5.3.0.