Both fonts come in both a single-line version and a hairline version different software programs will use different formats. They're meant for a sketch pen, foil quill, engraving tool, infusible ink pen, or any other stylus or nib that draws letters with a single line instead of an outline. Single-line and hairline fonts aren't your ordinary fonts they can't be used for word processing, printing, or cutting. Introducing Dear Agatha, a single-line and hairline font duo! You get a fun cursive font with tons of alternates and extras, and an all-caps sans-serif for easy pairing.
