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Add new filter example

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Jermolene 2014-10-09 20:51:58 +01:00
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created: 20140410101941871
modified: 20141008180223576
modified: 20141009180223576
tags: Learning
title: Introduction to Filters
type: text/vnd.tiddlywiki
@ -99,6 +99,12 @@ You can use multiple filter operations at once. This example selects all tiddler
Each separate operator is processed in turn, accumulating the tiddlers that they select.
Here's an example that returns tiddlers tagged ''alpha'' or ''beta'' that are also tagged ''task'' and not tagged ''done'':
```
[tag[alpha]] [tag[beta]] +[tag[task]!tag[done]]
```
! ANDing Multiple Filter Operators
A sequence of operators can be logically ANDed together by bashing them together and merging the outer square brackets. This is called a "run" of operations. For example, here we select tiddlers that are tagged "introduction" and also tagged "demo":