doc/filters: reformat and rework gradfun.
authorClément Bœsch <ubitux@gmail.com>
Tue, 18 Dec 2012 21:19:34 +0000 (22:19 +0100)
committerClément Bœsch <ubitux@gmail.com>
Wed, 19 Dec 2012 02:16:43 +0000 (03:16 +0100)
commitfea6f5e14d1c625b45436126ab01d9862038417d
treece07b138417addda0b8fad20bc42d4c019c9134b
parent526e2415bd1e7e3f1f601ca2eb5e94513a830c9a
doc/filters: reformat and rework gradfun.

Note that examples are changed.
doc/filters.texi