IDL Problem Code `29` with alias `reserved-pro`

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Warning

Potentially fatal error depending on if the internal routine is written in PRO code or in core IDL/ENVI

This identifies when user-defined procedures match the same name as routines internal to IDL.

Here's an example:

idl

pro writeu
  ; ^^^^^^ reserved procedure

  ; ... logic
end

To fix, change the name of your routine:

idl

pro myWriteU
  ; ... logic
end

IDL Problem Code 29 with alias reserved-pro ​