Hello Olikraus, I downloaded the version 1.11 ( u8glib_arduino_v1.11.zip ) at Google Code Archive - Long-term storage for Google Code Project Hosting..
I read the news for 1.11: New release v1.11 is available for download:
Support for T6963
Support for Arduino Due
Sleep Mode
4x mode for ST7920
New C++ interface for ST7920
but i not find how i have to do for use the function sleepon and sleepoff.
I'm looking for text "sleepon" in all archives of library and I not find it.
Can you help me. Thanks.