Fonts

[Jim Benedict]

Is there any easy way to change fonts within a plot title?  For
example, I want the title:

Temperature and [theta]

where [theta] is the actual Greek letter.  Is there a one-line
command that can do this, i.e., change font from 1 to 3?  Or, do I
have to use multiple command lines and carefully position the Greek
letter:

set font 1
draw string x1 y1 Temperature and
set font 3
draw string x2 y2 z

(z=[theta] for font 3)  Hopefully there's a better way than this one.

Thanks,
Jim Benedict