Filter what is displayed on a tab

Step 1: Define a filter.

Step 2: Create a button. Adding a hotkey is probably useful.

Select NONE SHOWHIDDEN
Select PATTERN=MyCoolFilter FILTER FILTERFLAGS=hidenomatch
Select FIRST SETFOCUS

Button as XML
<?xml version="1.0"?>
<button backcol="none" display="both" textcol="none">
	<label>Hide MyCoolFilter</label>
	<icon1>#selectall</icon1>
	<function type="normal">
		<instruction>Select NONE SHOWHIDDEN</instruction>
		<instruction>Select PATTERN=MyCoolFilter FILTER FILTERFLAGS=hidenomatch</instruction>
		<instruction>Select FIRST SETFOCUS</instruction>
	</function>
</button>