Interface ParameterUse

The filter names applied to the value, innermost first; empty unless the use is a value a {{ }} hole writes (the hole's own value, or a branch of an inline if in it).

Whether a default(…) filter supplies a value when the parameter has none.

Whether the use sits inside an {% if %} block, is part of an {% if %} condition, or is any part of an inline if.

Whether the use is <name>.length, which reads the length of the value.

The parameter name as written.

The whole tag the use sits in.