Hmm, ledger[0] or hledger[1] is probably the best solution then. You
could instead write a script to generate invoices from the data in them.<p>[0] <a href="http:&#x2F;&#x2F;ledger-cli.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;ledger-cli.org&#x2F;</a>
[1] <a href="http:&#x2F;&#x2F;hledger.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;hledger.org&#x2F;</a>