Illegal source operation.

#2000 Compile-time error

Illegal source operation.

Additional Information

The 'IS ATTACHED' test cannot be applied to the MARKUP SOURCE 'X'.
A stream type test cannot be applied to the VALUE STRING SOURCE argument 'X'.
Source 'X' is not available when NO-DEFAULT-IO is declared.
where X is the name of an OmniMark pre-defined source.

Recovery

Compilation continues but no compiled source code file will be saved.

Explanation

This error is emitted whenever an operation is encountered which is not applicable to the source to which it is being applied.