As of WLED version 14.0, additional symbols are displayed for effects. These indicate certain possibilities or special features of the respective effect:
"One dot": these effects are 0D effects, meaning that all LEDs will have the same color for these effects.
"3 dots": these effects are 1D effects for LED strips.
"Matrix": these effects are 2D effects for LED matrices.
"Palette": with this effect, different color palettes can be set.
"Note": this effect is an audio reactive effect and reacts to the volume of the audio signal.
"Double Note": this effect is an audio reactive effect and reacts to the frequencies in the audio signal.