seq.scan

Form

{
  "op": "seq.scan",
  "source": <expression:Sequence>,
  "as": "<name>",            // optional: the element
  "seed": <expression>,      // what the first step starts from
  "acc": "<name>",           // what the step before made
  "next": <expression>       // what this step makes, reading both
}

As the specification on the plugin's main branch writes it, read again on every run.

What it does is in that plugin's specification, which ships with the plugin and changes when it releases — read it.

Add it

dotnet add package Rulealize.Plugin.Sequence