doc/filters: review introductory example and explanation
authorStefano Sabatini <stefasab@gmail.com>
Fri, 5 Apr 2013 23:43:01 +0000 (01:43 +0200)
committerTimothy Gu <timothygu99@gmail.com>
Wed, 28 Aug 2013 16:35:20 +0000 (09:35 -0700)
commit19382a2a1062d153d5ae8738022991749335bbe6
tree069d6e7aa5b666b407c14490573386df8d620512
parent57588cda7bec6fe2df72feacf143a8ef3f5ab3fe
doc/filters: review introductory example and explanation

In particular, fix wrong vertical mirroring command, and clarify
and extend explanation.

Based on a patch by littlebat <dashing.meng@gmail.com>.

Should fix trac ticket #2413.
(cherry picked from commit 215ca864759a54f45265a51ac57dbfd75cb23da2)

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Conflicts:
doc/filters.texi
doc/filters.texi