ID Symbols are generally not created using 'special characters' particularly those where you can add internal characters such as an ID Balloon or such. The only 'symbols' which are defined using special characters are those found in the Text Editor when the 'Symbols Gategory' is set to either 'Drafting' or 'GD&T'.
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA Siemens PLM: UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.