TW Fundamentals: vars vs let

The difference in a "picture":

The code for copy-pasting into your TiddlyWiki instance:

<$vars msgP1="Hello"

       msgP2 = "World!"

       theMsg={{{ [<msgP1>] [<msgP2>] +[join[ ]] }}}>

Using the vars widget:

* msgP1: <<msgP1>>

* msgP2: <<msgP2>>

* theMsg: <<theMsg>>

</$vars>

<$let msgP1="Hello"

      msgP2 = "World!"

      theMsg={{{ [<msgP1>] [<msgP2>] +[join[ ]] }}}>

Using the let widget:

* msgP1: <<msgP1>>

* msgP2: <<msgP2>>

* theMsg: <<theMsg>>

</$let>

A textual explanation to follow ...