On a regular page it is possible to convert your handwriting, whether your content is a piece of text, math, or a diagram, double-tap anywhere on your block or object, or tap 
at the right of the conversion preview, then tap Convert.
Handwriting conversion is not available on Freeform sections or pages but this can be copy/pasted into regular Nebo pages and then converted. Handwriting on PDF documents also cannot be converted to digital text.
Note: If you convert some text accidentally, tap 
in the top right to undo the conversion.