Line Extension and Decimal Settings in DS 6

Hello,

My name is Germán.

I have been working with Autodesk products for over two decades. However, since I don't do as much design work as I used to, I decided to try DesignSpark.

The learning curve has not been very easy for me, but little by little, I am finding solutions to the problems caused by my habits.

I have two questions:

1. In sketch mode, is there no tool to extend lines?
2. In version DS 6, is it possible to change the decimal comma to a decimal point? This last issue is not very important, but if it were possible, I would prefer to use the decimal point.

Thank you for your help.

Best regards,

Germán