How to make the Tabs / Indent line up at the same place in the Editor text area? (91065)

When I type in the Editor and I press the Tab Key to indent forward what I'm typing, it does not line up with the previous lines.

For example, the data types below does not line up with the other lines. I want them to line up with each other automatically as I type..

CREATE TABLE MAUI.AAA
(
SSN NUMBER(9),
FIRST VARCHAR2(18 BYTE),
LAST VARCHAR2(18 BYTE),
DOB DATE,
STATE VARCHAR2(2 BYTE)
)

Use a mono spaced fonts like 'Courier' in order for the tabbing to align. If you use non-mono spaced fonts like 'Arial' or 'Tahoma', the tabs will not line up.