5BGU7U3KD4H3HDHPJK5T3HG6MQ6QKXTDO3VKBFM6BR2Q2TZIPYGAC
MZ3DMYPD4LSSQKEA3GNI5MK2QNTJ523DTNG6DUPWEWLH4FLUIQSAC
2GVF47BINWURV2RS7QY6BOOV4X7NX2WWAF2CG42DSCCKI7MVSJ4QC
ILOA5BYFTQKBSHLFMMZUVPQ2JXBFJD62ERQFBTDK2WSRXUN525VQC
2L5MEZV344TOZLVY3432RHJFIRVXFD6O3GWLL5O4CV66BGAFTURQC
TGHAJBESCIEGWUE2D3FGLNOIAYT4D2IRGZKRXRMTUFW7QZETC7OAC
-- start_screen_line_index: a count of the number of screen lines above this line
-- screen_line_starting_pos: optional array of codepoint indices if it wraps over more than one screen line