caption: insertbefore
created: 20170406090122441
modified: 20170406091248994
op-input: a [[selection of titles|Title Selection]]
op-output: the input tiddler list with the new entry inserted
op-parameter: the title of the tiddler to insert
op-parameter-name: T
op-purpose: insert an item <<.place T>> into a list immediately before an item <<.place B>>
op-suffix: the name of a variable containing the title of the tiddler before which this one should be inserted
op-suffix-name: B
tags: [[Filter Operators]] [[Order Operators]] [[Listops Operators]]
title: insertbefore Operator
type: text/vnd.tiddlywiki

If the item <<.place B>> isn't present in the input list then the new item is inserted at the end of the list.