In determining the specification of node names there is some discussion on what should be allowed:

The current “beta” parser allows mixed case and this is used by a small number of nodes.

The options are:

• Allow mixed case and treat as case sensitive
  • “PiNODE” != “PINODE”
  • Pro: Doesn't break existing nodes
  • Pro: Larger name space
  • Con: mixed case could be confusing
  • Pro: Allows CamelCase names
• Allow mixed case and treat as case in-sensitive
  • node names could be stored as provided or in upper case (giving two potential sub options)
  • “PiNODE” == “PINODE”
  • Pro: Doesn't break existing nodes
  • Con: mixed case could be confusing
  • ?? : May allow Camel Case names (depending on how names are stored)
• Only allow a single case (Upper case only)
  • “PINODE” (“PiNode” isn't permitted)
  • Con: breaks existing nodes
  • Pro: Removes and confusion over name space