e paper display 2.7"

I am implementing e paper display. I have used the library which is in link seeedstudio.com/wik…. I downloaded the code(text.ino in example) in Aurduino board. But I couldn’t able to see any thing on display.

The following doubt I have,

1)I noticed, there are two ePaper::drawUnicode. If I want to send only character(SeeedStudio), which ePaper::drawUnicode I want to use?.
2)What does getMatrixUnicode is doing.
3)If I want to print just characters(String"SeeedStudio"). Whether this SD is required? IF not how can I directly send to display.
4)The Sd_paper.cpp & .h files relate to internal SD card(which is in the epaper shield) or external.