empty headers

[Duncan Sargeant]

Hiya.

I'm looking for a way to put empty headers in an email messages so that
when I compose a new message, the header fields are there for me.

I thought I could do this using my_hdr but I'm apparently wrong.  I
couldn't find anything in the manual.

I example of what I want to do is:
my_hdr X-Task-Priority:

So that I can just fill in the header field when I edit my messages.

Any pointers?

,dunc