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Environment variables must start with the $ sign and only use capitals, numbers and "_" characters:

• $RMANTREE/bin/txmake: returns the path to the txmake utility.
• Curly braces can also be used for composition: 
  • ${SHOW}_assets/<shape.assetName>/<shape.assetVersion>/tex/<shape>_diff.<udim>.tex

Retrieving attribute values

RfM does not support TCL expression anymore but allows for attribute evaluation:

• <shape.time> returns the value of the 'time' attribute on the shape node ('shape' as opposed to the 'transform' node).

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