val blit :
src:t@ local ->(src_pos:int ->(dst:Core.bigstring@ local ->(dst_pos:int ->(len:int ->
unit)@ local)@ local)@ local)@ local
val blito :
src:t@ local ->(?src_pos:int ->(?src_len:int ->(dst:Core.bigstring@ local ->(?dst_pos:int ->(unit ->
unit)@ local)@ local)@ local)@ local)@ local
val unsafe_blit :
src:t@ local ->(src_pos:int ->(dst:Core.bigstring@ local ->(dst_pos:int ->(len:int ->
unit)@ local)@ local)@ local)@ local
val sub : t@ local ->(pos:int ->(len:int ->Core.bigstring)@ local)@ local