fontforge - What is it called when a font's character(s) changes form based on the sequence of letters surrounding it?

Question

What is it called when a font's character(s) changes form based on the sequence of letters surrounding it?

Consider the character o and the sequence of characters oo.

Expected result:

Actual result:

question from:https://stackoverflow.com/questions/65621744/what-is-it-called-when-a-fonts-characters-changes-form-based-on-the-sequence

Answer 1

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