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Updates the default global style.
| UpdateDefaultStyle /lineType [type] /lineColour [colour] /lineThickness [thickness] /fontName [name] /fontSize [size] /fontColour [colour] /italics /bold /overline /underline /propertyStyle | 
| /bold | Bold font. | 
| /fontColour | As an AABBGGRR value. | 
| /fontName | Font family name. | 
| /fontSize | A number. | 
| /italics | Italic font. | 
| /lineColour | As an AABBGGRR value, 0x00ff00ff for blue=255, green=0, red=255. | 
| /lineThickness | A number. | 
| /lineType | Options are Solid, Dash, Dot, DashDot, DashDotDot. | 
| /overline | Overline the text. | 
| /underline | Underline the text. | 
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