a3ad8bd7____Integrative_Genomics_Viewer__Description
[Command] Set Feature Visibility Window [Description] 
Specifies the threshold, in kilobases, for IGV to display features in the window. In other words, if you set this at 50 kb, IGV will only display features after you have zoomed in to display 50 kb or less in the IGV window.
Pop-up Menus | Integrative Genomics Viewer