Created Menu options explained (markdown)

Menu-options-explained.md

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+# Main Settings
+## Model selector
+This option will allow some default functions to be preset for the selected model.
+
+## Allow tuning during screensaver
+When set to ON the screensaver won't be de-activated while tuning
+
+## Dynamic SPI speed
+Here you can change the communication speed with the display, can be usefull if a disturbtion caused by the data to the display occurs
+
+# Audio Settings
+## Set volume
+This will allow you to set the default volume level. Usefull for DIY radio's without volume knob. On portable devices, leave it at 0dB
+
+## Beep at band edge
+When switched ON, you will here a beep when band edge is reached. You will also hear a beep when the edge of a shortwave band is reached.
+
+## Audio output
+The radio is capable of having full MPX output on the audio jack. Usefull for analysing stereo and RDS signals. For normal use, leave it on STEREO.
+
+## Set high cut corner frequency
+When High cut threshold is triggered a soft reduction of high tones will be applied. You can set the corner frequency here.
+
+## Set High cut threshold
+Here you can set the threshold for the soft reduction of high tones. It will be activated if the signallevel drops below the set value.
+
+# Display settings
+## Lan