Using experimental mode for footnotes to endnotes, the position of the numeric superscript values from the input PDF are detected with very high accuracy. However, in the output TXT, numeric values of the input superscript are never generated. Instead various non-numeric output values are generated.

Examples:
input: safeguarded.⁴ output: safeguarded.' (output value is the apostrophe symbol)
input: times.⁶ output: times.° (output value is the degrees symbol)
input: individual.¹⁴ output: individual.'* (output values are apostrophe, asterisk)
input: ahead¹⁵ output: ahead.!° (output values are exclamation mark, degrees symbol)

Using the settings in the web UI:

language | en
fast mode | False
extract tables | False
experimental mode | True