===== set_screen_size =====
== void set_screen_size(char size); ==

Set the virtual screen size -- width x height, in tiles (8x8).

{|
! HuC Define !! Value
|-
SCR_SIZE_32x32	|| 0x00
|-
SCR_SIZE_64x32	|| 0x01
|-
SCR_SIZE_128x32	|| 0x03
|-
SCR_SIZE_32x64	|| 0x04
|-
SCR_SIZE_64x64	|| 0x05
|-
SCR_SIZE_128x64	|| 0x07
|}

===== spr_ctrl =====
==  void spr_ctrl(char mask, char value); ==
Set attributes of current sprite.

You can set multiple values at once as you like, e.g., ''spr_ctrl(FLIP_MAS | SIZE_MAS, FLIP_X | SZ_16x64);''
{|
! HuC Define !! Value
|-
! FLIP_MAS || 0x88
|-
! FLIP_X_MASK || 0x08
|-
NO_FLIP_X || 0x00
|-
FLIP_X || 0x08
|-
! FLIP_Y_MASK || 0x80
|-
NO_FLIP_Y || 0x00
|-
FLIP_Y || 0x80
|-
! SIZE_MAS || 0x31
|-
SZ_16x16   || 0x00
|-
SZ_16x32   || 0x10
|-
SZ_16x64   || 0x30
|-
SZ_32x16   || 0x01
|-
SZ_32x32   || 0x11
|-
SZ_32x64   || 0x31
|}