Cash flow report includes depreciation¸opening balance etc.

[Henri de Solages]

Mongolia, city of Precious (Эрдэнэт)

Hello.

The cash flow report includes flow from opening balance, flow to depreciation, flow to account receivable etc.. These are not cash flows. How to get a right cash flow report?
   Before GnuCash, my small company would use OpenOffice.org spreadsheet, and each account had a boolean saying if it was a cash account (i.e. a real "account" in the non-professional meaning of the term) or not. Any flow between a cash account and a non-cash account (for instance from a bank account to an expense account, or from an income account to a bank account) was included into the cash flow report, while flows between 2 cash accounts (for instance a flow between 2 bank accounts, which is just an internal flow, not to appear in the report) or between 2 non-cash accounts (for instance from an income account to an account receivable) were not. This was a very simple and effective algorithm.
But in GnuCash, I can´t see anything to say that an account is or not a cash account.

On 2010-01-04, Dereck Atkins replied to someone else in this mailing-list "Please read my previous emails on this topic, I'm not going to repeat it yet again."
but he writes so many posts that I couldn't find which one he referred to.
   Generally speaking, a Wiki would be, to my mind, a better way than a mailing list to find user-information (as opposed to development information) quickly.

Thank you in advance for your help.