Using Unicode. You can insert a number of special symbols into Mtext.
In the Mtext editor select the symbol icon "@" on the formatting toolbar to get the symbols menu. But what if you want to insert a symbol not in this list? There are a number of characters in most fonts that can be inserted with some good old fashioned arcane syntax. Unicode Table. Unicode Characters in the 'Symbol, Math' Category.
Autodesk. Blogs. Blocks. C3DBenelux.