First check to see if the font you're using just might have the ǿ character (U+01FF).

Then check to see if it has combining accents, which are zero-width characters with the glyph set to the left, so that it appears above the character preceding it. The combining acute is U+0301. You can copy it from this ǿ and see if it shows up correctly.

In the absence of either of these, go ahead and kern them together, but be aware of what will happen if you ever need to copy the text and lose the formatting. For positioning, refer to the ó in the font you're using.

Is that the name of a person?

There are probably different ways to position it, but this my method: I let the imaginary axis of the acute accent emit from the top left corner of the letterform.

A quick check over at Myfonts glyph chart clearly shows that Ø and ø ar e indeed included in all Syntax weights.

http://new.myfonts.com/fonts/adobe/syntax/roman/characters.html

You should be able to reach from a Finnish keyboard as well.

Thanks all, especially cerulean, I didn't for some reason realize that ó would be the way to position the acute character.

The problem is not the ø character, but the fact that Syntax does not let me position the acute over the ø. As I copy and paste ǿ to InDesign, it shows a missing character symbol (rectangle with an x on it).

Since I need ǿ several times (regular and bold weights) in the article I think I'll create this character for easier use. What would be the easiest way to do this? I don't at the moment have any software for creating characters for fonts. Do you have any recommendations?

Edit: @Frank Frode: Yes, that is the last name of a person.

Okay, more trouble.

In the article another name with another unusual character came up. Porsáŋgu is a municipality in Finnmark county, Norway (Wikipedia). Syntax does not include the eng/engma letter. I made my own version of this character combining n and j. What do you think about this?

And now I really do need a software to add letters to my fonts so any recommendations, tips and help would really be appreciated!

exempli gratia: http://typophile.com/node/84219

Rikke, your eng is ok, j leg is the usual way to build this glyph.

You may try TypeTool to include new glyphs to your fonts, but first verify if their EULA allow you do this. There is also the free FontForge (follow the link given above by Janek) and the more complete and expensive FontLab Studio.

You can also consider a font update as Syntax has a standard, limited character set and the problem you face now would appear other times in the future.

Unfortunately Linotype doesn't allow modifications in their EULA.

Frode helped me out in this matter and got me contact info for Linotype which will help me get this sorted out.

Thanks for your help everyone!

- riku -