# Monday, July 17, 2017¶

I worked once more on my document Why software must be free because I believe that our future salesman needs to understand these things.

I fixed a few bugs related to #1933:

• AttributeError: ‘NoneType’ object has no attribute ‘vat_regime’ caused by a missing test in lino_xl.lib.vat.VatDocument.fill_defaults().

I wrote a bit of documentation in Analytical accounting.