The `fill()`

function available under `Function and modifiers`

in timeboards allows you to tweak the interpolation settings. It takes as parameters a function to use for interpolation and a time in seconds that represents the maximum size of a gap you want to interpolate. You can use 4 different functions for interpolation:

`linear`

gives you a linear interpolation between the beginning and the end of the gap`last`

fills the gap with the value of the beginning of the gap`zero`

fills the gap with a zero value`null`

deactivates the interpolation

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