LyX ⇒ Any command to coyp selected as (la)tex source?

[Troy Daniel]

Sometimes, I use LyX as an equation editor, and I want to copy the corresponding latex source with a shortcut, but found none.

Currently, I do this by:
1. Opening the preview panel;
2. Showing onely current paragraph.
3. Selecting the corresponding source, and copying it.

But it can be frustrating by repeating it many times.

Any advice?