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1. Set the attributes of characters to be displayed on the text screen
   ATTR [ScreenID,]HorizontalFlip,VerticalFlip,Rotation
   ATTR [ScreenID,]DisplayAttribute
2. Get display character attribute of text screen
   ATTR [ScreenID] OUT HorizontalFlip,VerticalFlip,Rotation
   ATTR( [ScreenID])

1. Set the attributes of characters to be displayed on the text screen

ATTR [ScreenID,]HorizontalFlip,VerticalFlip,Rotation
ATTR [ScreenID,]DisplayAttribute

・When this command is executed, the display attributes of characters displayed in PRINT, TPRINT, INPUT, etc. will change.

Arguments

ScreenID

Text screen ID to specify character display attributes: 0 to 4

・4 is the default.

HorizontalFlip

・Invert the displayed character left and right with 1.
・No inversion at 0.

VerticalFlip

・Invert the displayed characters up and down with 1.
・No inversion at 0.

Rotation

・Rotate 0, 90, 180, and 270 degrees with 0, 1, 2, and 3, respectively.

DisplayAttribute

・Set the horizontal flip, vertical flip, and rotation as a bit value.

Example

ATTR 0,0,1:PRINT "ABC" 
ATTR 2,8:TPRINT 2,"XYZ" 

2. Get display character attribute of text screen

ATTR [ScreenID] OUT HorizontalFlip,VerticalFlip,Rotation
ATTR( [ScreenID])

Argument

ScreenID

ID of the text screen that acquires the character display attribute: 0 to 4

・4 is the default.

Return Value

HorizontalFlip

・Invert the displayed character left and right with 1.
・No inversion at 0.

VerticalFlip

・Invert the displayed characters up and down with 1.
・No inversion at 0.

Rotation

・Rotate 0, 90, 180, and 270 degrees with 0, 1, 2, and 3, respectively.

DisplayAttribute

・Get the horizontal flip, vertical flip, and rotation as a bit value.

Example

ATTR OUT HREV,VREV,ROT
A2=ATTR(2)