You (meaning Margie -- all of this is for Margie) can re-edit an entry from the blog by clicking on the paragraph marker (¶) at the top of the entry.

You can enter in various special characters by putting in the following entity codes (the ones starting with an ampersand, and including the semicolon):

° (degree) - °

¼ (1/4) - ¼
½ (1/2) - ½
¾ (3/4) - ¾