The Qualfier registered for each feature key is different.
This is a contract for posting international nucleotide sequence database.
From the menu, click "Settings" -> "Feature Setting .."
The Feature Setting dialog will be displayed.
Click the "Reference Map" tab.
The "Reference Map" tab pane appears.
A list of feature keys is displayed at the bottom of the dialog.
Only the feature key whose check box to the left of each feature key is checked is displayed in the linear feature map.
This setting is common to all the genome sequences displayed in the linear map.
The pull-down menu to the right of each feature key lists Qualifiers registered for each feature key.
The values of these qualifiers are used as labels for the feature and are displayed above each feature of the linear map.
Label button of the tool box (toggle button)
Switching on / off of label display switches between display and non-display each time the toggle button of the tool box is clicked.
If you check the checkbox to the left of the Qualifier list, that label will always be displayed, regardless of hidden designation by buttons in the toolbox
When you zoom out, the features are densely displayed, and their levels are displayed so as not to overlap upwards in order to prevent overlapping.
In this case not only the height of the lane but also the label indication will be lost unless you increase the Y Offset value.
State where offset is widened
At the bottom are buttons for selecting the feature key list, you can select them all at once, or reverse the selection.
If you hover over one feature on the linear map, the contents of the Qualifier that the feature has will pop up.
You can change popup display on / off for each Qualifier. You can also change the display order.
For details, please refer to "Switching the feature popup display contents".