There are differences between ideCAD's writing application and AutoCAD's writing application. You have written a text with a height of 2.5 units in ideCAD, this height is taken into account together with the line spacing. However, if you measure the height of the letter, for example, the floor-to-ceiling height of the letter "A" comes out to be around 2.1. This is the reason why your texts appear large when exported to AutoCAD, because AutoCAD uses font sizes without considering line spacing. In other words, to get the same effect as ideCAD, the text in AutoCAD needs to be reduced. If you want your font to stay 2.5, as you mentioned, it will appear larger than in AutoCAD. As of version 6.5, we have adjusted our font sizes to look the same as AutoCAD, this type of confusion will be reduced.