[COOT] Macros in COOT

[A Leslie]

Having worked with O for many years I am only now getting serious with  
COOT. There are a couple of things that I would like to do that don't  
seem to be available (as far as I can tell), but which may well be  
possible using Macros.

Unfortunately  a quick Google has not revealed anything about how to  
use macros in COOT, but a colleague suggested they need to be written  
in Python or another language that I had not heard of before.

So my first question is where can I find a low level description of  
how to write macros with some examples (I know nothing about Python,  
except that it is fashionable) ?

There are specifically two things I want to be able to do:

1. Do an LSQ superposition using specified residues in multiple chains  
(superposing one oligomer on another).

2. To do a LSQ superposition of a homologous structure onto my working  
structure using +/- N residues about the current position, where N is  
a variable (not essential, could be fixed) and the current position is  
the last residue that I clicked on.

Thanks

Andrew