Notes and doubts about GL

Nathan,

I observed some things about GL and would like to confirm if they are correct/true. Beyond this, I have some doubts to clear.

1) Is not possible to add two GL account_groups with the same name, despite belong to different sessions of accounts; (Can you change it?Is it complicated?)

2) The bank account number can't be composed by nothing beyond numbers, is it correct?

3) When add an entry (GL>>Journal Entry or Bank Transaction) the decimal separator is dot, but in Brazil we use comma. How can I change it?(In preferences>>perp_api the currency format is set "1200,03")

4)How can I view the current balance of a bank account or GL account. Is there a way to show it when adding new transactions?

Thank you so much for help.

Regards