2 Basic questions regarding screener and cash flow statement

Thanks for explaining . This topic was eating me since many days .
To sum it up –

1. When we look at the cash flow statement in the screener , what we are looking at are delta values
2. Payables change = recent year – previous year
3. Receiveables and inventory change = previous year – current year
4. If payables is +ve means company is purchasing more raw materials etc. on credit than previous year (good sign)
5. If receiveables is +ve means co. is giving less material on credit(again good sign)
6. If inventory is +ve means co. is decreasing its inventory(also good sign)

Also are there any other values that are depicted in change rather than actual values