One input of this document when another document uses it as a block: the value that document sets, by this block's name. On its own, the Input is its Default, and its kind is the default's: a number with its unit, a yes/no or a text typed in, or anything wired from a block of its own. Min and Max give the range of a number: a value outside them is a warning on the block, and on a value that is no number they are refused. Its name is the name a parent sets it by: unique among the document's Inputs, without a dot.
The value of the Input on its own: a number with its unit, a yes/no or a text typed in, or anything wired from a block of its own.
The smallest value the Input takes, for a number; empty for none.
The largest value the Input takes, for a number; empty for none.
A line of help for this Input, shown beside it where a document uses this one as a block; empty for none.