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Assign file to CRT.  | 
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Clear from cursor position till end of line.  | 
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Clear current window.  | 
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Show big cursor.  | 
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Hide cursor.  | 
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Display cursor.  | 
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Delay program execution.  | 
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Delete line at cursor position.  | 
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Set cursor position on screen.  | 
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Switch to highlighted text mode.  | 
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Insert an empty line at cursor position.  | 
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Check if there is a keypress in the keybuffer.  | 
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Switch to low intensity colors.  | 
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Return to normal (startup) modus.  | 
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Stop system speaker.  | 
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Read key from keybuffer.  | 
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Sound system speaker.  | 
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Set text background.  | 
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Set text color.  | 
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Set screen mode.  | 
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Return X (horizontal) cursor position.  | 
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Return Y (vertical) cursor position.  | 
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Create new window on screen.  |