Hi I'm trying to understand why PrStef does not use the fonts I defined for shooting the videos StandardFonts codeFont: (LogicalFont familyName: 'Source Code Pro' pointSize: 15). StandardFonts defaultFont: (LogicalFont familyName: 'Source Code Sans' pointSize: 13). StandardFonts listFont: (LogicalFont familyName: 'Source Code Sans' pointSize: 18). StandardFonts menuFont: (LogicalFont familyName: 'Source Code Sans' pointSize: 18). StandardFonts buttonFont: (LogicalFont familyName: 'Source Code Sans' pointSize: 12). I tried to avoid to convert a text into a string... may be showLesson: aLesson withTitle: aString self window setLabel: aString. self sourceTextModel setText: aLesson lesson. self isOpenInWindow ifFalse: [ self open ] but I do not know :( Stef