# :DISPlay:WINDow:FDLegend

:DISPlay Other Legend Commands

- :DISPlay:WINDow:ECLegend
- :DISPlay:WINDow:FDLegend
- :DISPlay:WINDow:TDLegend
- :DISPlay:WINDow:TIME{N}:LEGend:ECEXpand

## Command Syntax

    :DISPlay:WINDow:FDLegend {OFF | ON}

## Query Syntax

    :DISPlay:WINDow:FDLegend?

## Description

Shows or hides the Signals identification legend on all frequency-domain windows. This label is displayed in the content window's upper-right corner. The legend identifies:

- The output of the FFT function in Decibels (Hz), Degrees (Hz), and Seconds (Hz) content windows.