Node for text code?

After several failed attempts and look for something graphical, I thought this I do not know if it is possible.
I do not pretend to be a complete code insert, but to PROGMEM, IMAGE or similar values.
Using nth or some custom nodes is possible, but it consumes a lot of resources, and to have a view of values, the patch becomes huge in some cases.

Here the idea, a text box (as a comment) but with a pin that points to a line of not-implemented-in-xod