Update docs to mention V/OCT control in Sauce, Gravy, Pop.

Gravy.md

@@ -13,7 +13,7 @@ see [Sauce](Sauce.md).
 
 Gravy provides control over the following parameters:
 
-* **FREQ**: the filter's corner frequency. The default setting is 0, which corresponds to the note C5 = 523.251 Hz. Each unit on the FREQ dial represents an octave. The dial spans ±5 octaves around the note C5.
+* **FREQ**: the filter's corner frequency. The default setting is 0, which corresponds to the note C5 = 523.251 Hz. Each unit on the FREQ dial represents an octave. The dial spans ±5 octaves around the note C5. To use the FREQ CV input as a V/OCT control, set the attenuverter all the way clockwise to +100%.
 * **RES**: the filter's resonance, on a scale from 0 (the default) to 1. Higher resonance causes the filter to concentrate the passband closer in to the corner frequency. Toward the upper end of the resonance scale, you can even get sustained oscillations, also known as "ringing".
 * **MIX**: A value from 0 to 1 that controls how much of the original, unfiltered stereo signal is included in the output. The default MIX value is 1, which means that the output represents 100% filtered audio. As the value is decreased toward 0, more of the original audio is included in the output. At zero, the output is identical to the input (except for a one-sample delay inherent to all VCV Rack modules).
 * **GAIN**: Allows you to make the output louder or quieter, as a convenience. Consider it a built-in VCA.

Pop.md

@@ -55,6 +55,8 @@ knob all the way to +7. This results in a mean pulse rate of 256 Hz.
 If you turn SPEED all the way down to −7, the effective frequency is $2^{-6}=\frac{1}{64}$ Hz,
 resulting in less than one pulse per minute on average.
 
+To use the SPEED CV input as a V/OCT control, set the attenuverter all the way clockwise to +100%.
+
 ## CHAOS control group
 
 When the CHAOS knob is turned all the way to 1 (its maximum value),

Sauce.md

@@ -12,7 +12,7 @@ Sauce is very similar to the stereo filter [Gravy](Gravy.md), but is optimized f
 
 Sauce provides control over the following parameters:
 
-* **FREQ**: the filter's corner frequency. The default setting is 0, which corresponds to the note C5 = 523.251 Hz. Each unit on the FREQ dial represents an octave. The dial spans ±5 octaves around the note C5.
+* **FREQ**: the filter's corner frequency. The default setting is 0, which corresponds to the note C5 = 523.251 Hz. Each unit on the FREQ dial represents an octave. The dial spans ±5 octaves around the note C5. To use the FREQ CV input as a V/OCT control, set the attenuverter all the way clockwise to +100%.
 * **RES**: the filter's resonance, on a scale from 0 (the default) to 1. Higher resonance causes the filter to concentrate the passband closer in to the corner frequency. Toward the upper end of the resonance scale, you can even get sustained oscillations, also known as "ringing".
 * **MIX**: A value from 0 to 1 that controls how much of the original, unfiltered stereo signal is included in the output. The default MIX value is 1, which means that the output represents 100% filtered audio. As the value is decreased toward 0, more of the original audio is included in the output. At zero, the output is identical to the input (except for a one-sample delay inherent to all VCV Rack modules).
 * **GAIN**: Allows you to make the output louder or quieter, as a convenience. Consider it a built-in VCA.