SSD1306 Ascii library question

[amazed]

Hello,

I'm getting familiar using small 128x32 Oled display with SSD1306 Ascii library.

I noticed the scroll function which can be set with setScrollMode() function, but I don't understand the difference between SCROLL_MODE_AUTO and SCROLL_MODE_APP?

SCROLL_MODE_AUTO: newline will scroll both the display and RAM windows
SCROLL_MODE_APP: newline scrolls the RAM window. The app scrolls the display window.

What does RAM windows supposed to mean?

Thanks in advance.

[xfpd]

It seems to work its way back to this... which probably has a presence in a lower-level header showing where in memory the OLED pixel information resides... contained in this link chapter 10.. but that's only a guess.

/**
   * @brief Scroll the RAM window.
   *
   * @param[in] rows Number of rows to scroll the window.
   */
  void scrollMemory(int8_t rows) { setPageOffset(m_pageOffset + rows); }