What do 'w', 'dw', 'lpsz', etc stand for?

[onemilimeter]

Private Type SYSTEMTIME
     wYear As Integer
     dwLowDateTime As Long
     lpszSourceName As Long
     pDest as Any
     lpFile
Ttime as FILETIME
End Type

Pls advise what do 'w', 'dw', 'lpsz', 'p', and 'lp' mean? Thanks.

[demotivater]

Just variable names. The letters may be in reference to another part of the program or something, but it looks like they are just the names given to the variables.

[onemilimeter]

I think 'w', 'dw', and etc are used to differentiate the type of variable, e.g. 'w' -> WORD. So, can you guest what 'dw', 'lpsz', 'pDest' and 'lp' stand for? Thanks.

[penagate]

w= Word (2 byte short integer)
dw = DWord (4 byte integer)
p = untyped pointer
lp = generic long pointer
lpsz = long pointer to a null-terminated string