System Functions

MID( ) Return Substring

Format	MID(string$,offset[,len][,ERR=stmtref])   Where:
	len	Length of the substring.
	offset	Starting position of the substring. Numeric expression, integer. If the integer is negative, the offset is taken from the end of the string.
	stmtref	Program line number or statement label to which to transfer control.
	string$	String expression whose hash value is to be returned.
Returns	Extracted portion of string (similar to substring).
Description	Use the MID( ) function to extract a portion of a string. Using this function is similar to using a substring, except that it can be used directly with the return value of a function, variable or expression; e.g.,   ->IF MID(MSE,22,1)>$00$ AND MID(MSE,22,1)<$FF$ THEN %WDX$="[WDX]" In addition, if the offset is negative, ProvideX uses it as an offset from the end of the string. For example, MID(X$,-1) is the last character of X$. If the length is negative, then ProvideX uses it as the number of characters preceding the offset. That is, MID("ABCD",-1,-1) returns C (the first character preceding the last character) and MID("abcde",-2,-4) yields abc.   By default, if this function is passed an invalid offset, it returns a null string. If passed an invalid length, then it returns the rest of the string.
Example	F_KSZ=DEC($00$+MID(FID(0),11,1))