newbie question_two glyphs are changing simultaneously

[suewhitehead]

I am new to font creation and feel I probably did something wrong, but I can't figure out what to do to fix it. My font is working but I have somehow made lowercase s and lowercase n change together. I cannot change the glyph on one without the other changing. I didn't intentionally create any links. how can I get them to work separately again?  (of course my backup overwrote the previous one before I realized I had this problem.)

[Allan Murray]

There are two possibilities that I can think of:
1. You have mapped the same glyph to two characters
2. You have made a composite glyph - where a glyph is made up of other glyphs

Select one of the characters into the edit window and select information from the glyph menu.
Here you will be able to see if the glyph is of type 'composite' or if it is mapped to multiple characters.

If it is composite, use decompose glyph from the glyph menu to fix it.

If it is mapped to multiple characters, use the unmap button on the mapping window to unmap it.