# Wednesday, January 17, 2018¶

I stumbled once more into #2263, a subtle problem in lino.utils.memo that survived several bug huntings in the past. But today I finally fixed it.

I had a few attacks of inspiration for optimizing the developers guide… OMG, we have two customers waiting for me to work on paying issues, and still I can’t stop fiddling in the docs… which shows that Sphinx is inded a tool which makes programmers want to write documentation.

## Avanti continued¶

I added a new choicelist lino_xl.lib.clients.CommonContactTypes