1. $ Piece (abbreviated $ P):
格式：$Piece(expression, delimiter [,from[, to]])
Return one or more sub-strings are separated by delimiters of
2. $ the Order (abbreviated $ O):
Format: $ Order (variable [, direction])
Returns a specified variable in the direction of a previous or next index
3. $ the Get (abbreviated $ G):
Returns the value of a variable
If the variable exists variable itself is returned, there is no return null
4. $ the Data (abbreviated $ D):
Determine whether there is variable
5. The $ Justify (abbreviated $ J):
Format: $ Justify (expression, width [, desimal])
Description: Returns the value of a right-aligned, and can change its format.
6. The $ the Extract (abbreviated E $) :
Format: $ Extract (expression, [, from [, to]])
Description: Returns the specified portion of the string.
>Write $Extract("AABB",2,3)
FROM
7.$Replace
Format: $ replace (variable, str1, str2)
Description: Replace characters
s str=”abc”
w $replace(str,”a”,”d”)
8. The $ Translate (abbreviated $ TR)
Format: $ TRANSLATE (string, identifier [, associator])
9. The $ the Length (abbreviated $ L):
Format: $ Length (expression [, delimiter])
Description: Returns the length of a string, or the number of the delimiters substring
>Write $Length("ABCD")
4
10. The $ zconert (abbreviated $ zcvt)
>Write $zcvt(str,”U”)