Wrapper Plugin

Action.scpt

set wrapStart to system attribute "KMPARAM_WrapStart" -- as Unicode text
set wraptext to system attribute "KMPARAM_Text" -- as Unicode text
set wrapEnd to system attribute "KMPARAM_WrapEnd" -- as Unicode text

return wrapStart & wraptext & wrapEnd

Keyboard Maestro Action.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Name</key>
	<string>Wrap Text</string>
	<key>Script</key>
	<string>Action.scpt</string>
	<key>Icon</key>
	<string>KM_Wrapper_Plugin_Icon.png</string>
	<key>Title</key>
	<string>An action to wrap text.</string>
	<key>Results</key>
	<string>Pasting</string>
	<key>Parameters</key>
	<array>
		<dict>
			<key>Label</key>
			<string>WrapStart</string>
			<key>Type</key>
			<string>String</string>
			<key>Default</key>
			<string>*</string>
		</dict>
		<dict>
			<key>Label</key>
			<string>Text</string>
			<key>Type</key>
			<string>TokenText</string>
		</dict>
		<dict>
			<key>Label</key>
			<string>WrapEnd</string>
			<key>Type</key>
			<string>String</string>
			<key>Default</key>
			<string>*</string>
		</dict>
	</array>
</dict>
</plist>