Character Limit and Rules for WorkFlow State Names

Hi,

Hope you are well.  

Please advise about the character limit for the names of workflow states? How many total characters? Does the character limit include all characters - punctuation, numbers,  even the space character? Are there any characters/symbols we are not able to use in naming workflow states? Any other potential blind spots that could come up with naming workflow states?  I was not able to find anything related to this question in the documentation or help section or elsewhere. Could you please point me to where I could find this info?

Thank you so much for your time and assistance.