@johannes had a great idea when implementing help pages, this is a nice way of documenting objects.
The OLED128x64 has only 4 inputs corresponding to 4 lines.
The remind4 can now be chained (since i updated the library).
The "chainTrig" boolean signals tells the next remind4 in the chain "hey, buddy, i've got something, please take my input and transmit it to your output".