[changeset] clarification to pcolor doc-string

[John W. Eaton]

On 23-Sep-2008, Ben Abbott wrote:

| Ok ... I never would have figured that out. My understanding of octave's archetecture is close to pathetic :-(
| 
| I'll take a look.

To find how a function is defined, you can use "type" or "which".  For
example,

  type __go_draw_axes__

will tell you where the function file is found, and show you the
contents.  If the function is built in, you will just get a note
saying it is built in.  It would be nice if that also included the
source file name, but I've never gotten around to doing that.  It
would make a nice small project for someone to implement that feature
though.

jwe