Please refer the below list of formatting options available for a Note:
Bold Text (Ctrl+B)
Italics Text (Ctrl+I)
Remove Text formatting (Ctrl+/)
Superscript >> For example 19th
Subscript >> For example CO2
Insert Tabular Data >> You may choose the number of columns, add the last row for totals, name the column headings as per need, and add as many rows you need.
Reset Default Text >> Reset the note text to default and remove all changes done manually