AP_OSD: give credits to the original authors

libraries/AP_OSD/AP_OSD.cpp

@@ -139,6 +139,7 @@ void AP_OSD::update_osd()
     backend->flush();
 }
 
+//Thanks to minimosd authors for the multiple osd screen idea
 void AP_OSD::update_current_screen()
 {
     if (rc_channel == 0) {

libraries/AP_OSD/AP_OSD_MAX7456.cpp

@@ -261,6 +261,7 @@ void AP_OSD_MAX7456::buffer_add_cmd(uint8_t reg, uint8_t arg)
     }
 }
 
+//Thanks to betaflight for the max stall/reboot detection approach and ntsc/pal autodetection
 void AP_OSD_MAX7456::check_reinit()
 {
     uint8_t check = 0xFF;

libraries/AP_OSD/AP_OSD_Screen.cpp

@@ -196,6 +196,8 @@ void AP_OSD_Screen::draw_batused(uint8_t x, uint8_t y)
     backend->write(x,y, battery.has_failsafed(), "%c%4.0f", SYM_MAH, battery.consumed_mah());
 }
 
+//Autoscroll message is the same as in minimosd-extra.
+//Thanks to night-ghost for the approach.
 void AP_OSD_Screen::draw_message(uint8_t x, uint8_t y)
 {
     AP_Notify * notify = AP_Notify::instance();
@@ -250,6 +252,7 @@ void AP_OSD_Screen::draw_gspeed(uint8_t x, uint8_t y)
     backend->write(x, y, false, "%3.0f%c", v, SYM_KMH);
 }
 
+//Thanks to betaflight/inav for simple and clean artificial horizon visual design
 void AP_OSD_Screen::draw_horizon(uint8_t x, uint8_t y)
 {
     AP_AHRS &ahrs = AP::ahrs();