https://support.office.com/en-US/Article/Linear-format-equations-and-Math-AutoCorrect-in-Word-2e00618d-b1fd-49d8-8cb4-8d17f25754f8?ui=en-US&rs=en-US&ad=US is good

http://office.microsoft.com/en-us/word-help/linear-format-equations-and-math-autocorrect-in-word-HA101861025.aspx is recommended by Chao Jen

* partial differential symbol — partial _space_ f
* limit of integration —  http://superuser.com/questions/65988/how-can-i-create-limits-of-integration-in-word-2007s-equation-editor
* add tilde or bar or hat over a letter, see http://www.iun.edu/~mathiho/useful/Equation%20Editor%20Shortcut%20Commands.pdf

—- arrows tested in notepad++ :  ↓   ▲▼ ⇔ ⇖ ⇘  ⇙ ⇗

⭝⭜⤤⤥⤦

http://xahlee.info/comp/unicode_arrows.html and https://www.htmlsymbols.xyz/arrow-symbols have good listing.

—- blog
👎👍 .. Note there’s no short English token for advantage^disadvantage
∉∈
☆★ Note half-star (⯨) is not well-supported yet.
→ ⇒ ↔ ← can be in blog titles
⇏ … inferior to the simpler ≠>
≅(Unicode 2245)
≈(Unicode 2248)
≠
≜ can be replaced with :=
±
√ 2π
μs (microsec)
360° or °C
2³²

http://en.wikipedia.org/wiki/Greek_letters_used_in_mathematics,_science,_and_engineering has the html versions
http://www.enchantedlearning.com/math/symbols/