start help

A "halfHourMonA.html"
b "LibDocs/Random Charts.html"
c showChart
C "https://www.desmos.com/fourfunction"
d "LibDocs/clock.html"
e '#ertong'
f "http://williamkpchan.github.io/ForexChart.htm"
F "http://fanyi.baidu.com/"
g '#_youxi'
h "LibDocs/News Points.html"
H "LibDocs/monitorHSI.html"
i 'http://www.iciba.com'
j '#Javascript'
J '#_jiaoyu'
l '#dushu'
m "http://williamkpchan.github.io/medical.html"
M "https://www.google.com.hk/maps/"
n '#xinwen'
N '#Notes'
o '#sclj'
P '#Python'
p '#Programming'
q 'https://www.quora.com/'
r '#Rlang'
s "stkListVH.html"
S showMMA
t "http://my.weather.gov.hk/myindex_uc.htm"
T "https://translate.google.com/#en/zh-CN"
u "https://www.urbandictionary.com/"
v "https://williamkpchan.github.io/LibDocs/StkImgViewer.html"
w '#ruanjian'
W "https://web.whatsapp.com/"
x "https://wx.qq.com/"
X "http://williamkpchan.github.io/LibDocs/Random Charts.html"
y "https://www.youtube.com/feed/subscriptions"
Y '#yinyue'
z "http://williamkpchan.github.io/LibDocs/shortPeriodMain.html"

START
Starts a program in new window, or opens a document. 
Uses an unclear algorithm to determine whether the first passed argument is a window title or a program to be executed; hypothesis: it uses the presence of quotes around the first argument as a hint that it is a window title.
Examples:
start notepad.exe & echo "Done."
Starts notepad.exe, proceeding to the next command without waiting for finishing the started one. 
Keywords: asynchronous.
start "notepad.exe"
Launches a new console window with notepad.exe being its title, apparently an undesired outcome.
start "" "C:\Program Files\Internet Explorer\iexplore.exe"
Starts Internet Explorer. 
The empty "" passed as the first argument is the window title of a console that actually does not get opened, or at least not visibly so.
start "C:\Program Files\Internet Explorer\iexplore.exe"
Launches a new console window with "C:\Program Files\Internet Explorer\iexplore.exe" being its title, apparently an undesired outcome.
start /wait notepad.exe & echo "Done."
Starts notepad.exe, waiting for it to end before proceeding.
start /low notepad.exe & echo "Done."
As above, but starting the program with a low priority.
start "" MyFile.xls
Opens the document in the program assigned to open it.
start
Starts a new console (command-line window) in the same current folder.
start .
Opens the current folder in Windows Explorer.
start ..
Opens the parent folder in Windows Explorer.
start "" "mailto:"
Starts the application for writing a new email.
start /b TODO:example-application-where-this-is-useful
Starts the application without opening a new console window, redirecting the output to the console from which the start command was called.