title_body: What symbols should I use for phonemes when I have many vowels? Most conlang examples I find in tutorials use a small set of vowels, but the one I'm working on has 13 and I'm having trouble finding the simplest transliteration to work with. Here are the IPA symbols:
  
  Front    | Back
  ---------|----------
  [i]      | [u]  
  [y]      |
  ---------|---------
  [e]      | [o]
  [ø]      |
  ---------|---------
  [aɛ̯]     |
  [œ]      |
  ---------|---------
  [a]      | [ɑ]
  ---------|---------
  [œ̃]      | [õ]
  [ã]      |
  
  
  My keyboard only allows me to type àâäùûüèêëéìîï but not œɛɑø or the diacritics used in the IPA for nasal vowels and diphthongs.
  
  (EDIT: Note that my question really is all about the transliteration I'll be using for practical typing. Sure, I can just use fancy unicode symbols for my actual writing system in the end if I want to, but copypasting symbols isn't very practical for writing long texts.)
  
  The language uses a (very simplified) subset of Quebec French for sound inventory, but I wanted to avoid using too many digraphs or diacritics which French relies on heavily. I know I can always come up with a custom font and writing system later on which brings in more glyphs for vowels, but I need something practical to use during conception.
  
  I'd be interested if you have a generic answer as to what your own process is when you have a similar problem or a specific suggestion in my case.
  
  My incomplete solution for now is this (updated to include jknappen's suggestion which I like for the German-style umlaut). I could add a macro to my text editor to allow for tildes, but I still need to figure out how I want to distinguish [œ] and [e] or [a] and [ɑ].
  
  Front    | Back
  ---------|----------
  [i]  /i/ | [u]  /u/
  [y]  /ü/ |
  ---------|---------
  [e]      | [o]  /o/
  [ø]  /ö/ |
  ---------|---------
  [aɛ̯] /ä/ |
  [œ]      |
  ---------|---------
  [a]  /a/ | [ɑ]
  ---------|---------
  [œ̃]      | [õ]
  [ã]      |
upvoted_answer: One possibility is to use German-style umlauts, i.e., ü for /y/, ö for /ø/, and ä for /æ/; you can keep the symbol œ for /œ/. I'd recommend against having both ae and œ in the writing system because of confusability. The choice of tilde for nasalisation is a good one, IMO. The most problematic case are the two different kinds of a-sounds, but there are some African languages just going with a and ɑ (and there is also an uppercase letter for the ɑ in Unicode, it is named Latin Alpha). All the symbols are readily available in Unicode and should not pose insurmountable difficulties in text processing.