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What does NIL mean ?

Usually objects are implemented in a way, so that if any of the inputs contains an empty spread, the output also evaluates to an empty spread. Render objects with empty spreads on any input are not drawn.

The same thing is meant if somebody in the vvvvorums mentions "NIL"

HowTo avoid NIL

In most cases you will want avoid a Ø because it may puzzle the whole graph below.
see

• AvoidNIL (Spreads)
• AvoidNIL (String)
• AvoidNIL (Color)

HowTo create NIL

Sometimes you may need to input a Ø somewhere. it can be created with a little trick using

• Select (Value)
• Select (String)
• Select (Color)

see

or simply use the following modules:

• NIL (Spreads)
• NIL (String)
• NIL (Color)