How to change the font size of Datablocks, TextBlocks and Nametags on One-Line diagram

Step-by-step:

1) Click on the project tab in the PTW and select options.



2) Under the Option Groups, Select One-line and you will see a following window.



3) Under the Font Information you will see 3 boxes by the name Text Block, Name tag and Datablock. You can click on each of them to change the Font, Font Style and Font Size.