Understanding the difference between Ledger A/c printout and Statement printout
Understanding the difference between Detailed Ledger A/c and Statement of Account
"Detailed Ledger Account" is for internal use and "Statement of Account" is for external use (to be sent to clients or suppliers). The "Ledger Account" can also be thought of as a "statement of account for internal usage"
"Ledger Account" and "Statement of Account" printouts both show movements AND outstanding items by default. In practice most people suppress the movement section when sending statements to clients or suppliers.
"Statement of Account" is like a simplified Ledger Printout except that shows a separate account for each currency found in account and it only shows the CURRENCY amounts - not the base amounts and therefore skips any base currency only entries which the client isn't interested in.
Movements and outstanding items are totally different things. Both are equally applicable for the two styles of output "Ledger Account" and "Statement of Account".
In the "Statement of Account", outstanding items shows all outstanding items "as at" mentioned in the TO period setting. However the "as from" is not influenced by the FROM period in the setting and shows all previous outstanding items. The movement shows for the specific period in the setting (i.e. TO & FROM).
Period can mean a single period e.g. 3/2017 or a range of periods e.g. 1-3/2017
Finance > Maintenance > Clear open item statements - removes the ability to get outstanding items "as at" periods long ago.
It is an important feature of any good accounting system that you can get an account of outstanding items "as at" a date in the past, otherwise one is effectively prevented from working on new financial periods before prior periods have been closed.