Rowan drafting supports the Open Sans Condensed Tall characters shown below for use in drawings and for export to PDF. Characters not in this list may display in the Drawing Tool without issue, but may not export correctly to a PDF, SVG, or Visio version of the figure.
If you have trouble with the glyphs shown, you may need to download the free font here:
http://rowanpatents.com/wp-content/uploads/2021/02/OpenSans-CondTall.ttf_.zip and install it on your computer. Instructions for how to do this in your operating system should be available online.