The FLAGS feature can be used to show the known offsets as vertical "flagpoles". These flagpoles can be used on the displays to find matching spectrum tracks and thus help in the initial identification of the signal. However user should not trust too much on this feature: there are a lot of outdated or erroneous offsets listed so audio ID is still required for nailing the identity of any station. On the other hand FLAGS can offer a very useful tool for MW DXing.
FLAGS shown are the MWLI offsets ("GLOBAL offsets", taken from the TURTLE database and originating from the MWLI offset list) and local offsets (the offset values are collected/maintained by the user). The MWLI flags have longer poles, the local flags are presented as short "pins".
P-TAGS can be used to customise the color of the GLOBAL flags based on user's loggings/notifications (see P-TAGS help for more information).
FLAGS can be displayed/hidden by pressing ALT-X or clicking the TOOLBAR > FLAGS icon.
The number of listed GLOBAL flags can be huge on some frequencies and the display may be crowded by the flagpoles making the graphics cluttered. And many of the stations are unlikely to be heard in your QTH. That's why it is often useful to filter out the "unwanted" offsets from the flagpole set. You can do it in three ways:
The number of local flags (pins) is usually so small that there's no need to filter them.
By default the data shown next to the GLOBAL FLAG poles contains the exact offset value and the station name. If you prefer to omit the exact offset value, you can use the setting SETTINGS > OFFSETS > SHORT_FLAG_NAMES > YES.