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\$\begingroup\$Bonus points for doing it in Ceres: TIO\$\endgroup\$
\$\begingroup\$The requirement for a subtraction sign is rather strange for a negative number, hyphen-minus (U+002D) would be more appropriate.\$\endgroup\$
\$\begingroup\$@Notatree - Have added provisions to allow substitutions of ~ (U+007E TILDE) and * (U+002A ASTERISK) for the minus sign and middle dot, respectively.\$\endgroup\$
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SUin the landmarks list, so must be that that is missing. \$\endgroup\$~(U+007E TILDE) and*(U+002A ASTERISK) for the minus sign and middle dot, respectively. \$\endgroup\$