I'm designing a board with Eagle and I have placed some LEDs from the led library that comes with Eagle.
With the default layers activated, the LED looks correct in the Board (the anode and cathode can be distinguished by the flat part of the LED) However when Exporting the board for manufacturing, the LED looks different and it's not possible to distinguish the anode from the cathode (which may lead to solder it incorrectly).
After investigating a bit I realized that what I see in the design is actually a combination of the tPlace and tDocu layers (I'm guessing they where added later in a revision but in the incorrect layer). When exporting the board to be manufactured, only the tPlace layer gets printed in the board and the tDocu gets discarded in the physical product.
Since it's not a library that I made but a library provided by Eagle I'm wondering if:
Can I modify and correct the libraries provided by Eagle?
Can I force the tDocu layer to be printed in the actual board (to both tPlace and tDocu get printed)
I can of course create my own components, but if I can use the standard components it will save me a lot of time.