[Audacity-devel] Adding a zero line to the display

[Rupert S. <rup...@li...>]

I noticed the (reasonably popular) request on the old Audacity wiki
feature requests page and decided that it would be easy to add the line
itself (reason for doing this: easier to see DC offsets).

This patch won't give any sort of option in the preferences to
enable/disable/change_colour_of the line, but if anyone's interested I
(or anyone else) could happily implement this too.

Comments welcome,

Rupert