Inserts text at position in the list of strings stored in combo_box.
If position is negative then text is appended.
This is the same as calling ComboBox.textInsert with a NULL ID string.
An index to insert text
A string
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Inserts text at position in the list of strings stored in combo_box.
If position is negative then text is appended.
This is the same as calling ComboBox.textInsert with a NULL ID string.