Post Editor for G+
However, that only works with the old Google Plus.
If you are using the new version, just open and close a word or sentence (no line breaks or paragraphs) as follows. See example:
- *asterisks* = Bold
- _underscores_ = Italics
- -hyphens- =
- *_nested formatting_* = End in mirrored sequence.
Other Formatting Tips
These also work