Monarch 9460 Buffer-field1, 2, Start, Buffer-field1, start, Length only, MID LOCATION,TEMP1,#5,#5

M I D

Purpose	Extracts a sub-field from a string.
Syntax	MID buffer-field1 ,buffer-field2 ,start , length [ , [ invalid label ] [ , valid label ] ]
Process	The MID command extracts a sub-field from buffer-field1and copies it into buffer-
	field2; starting with the start position and extracting length number of characters.
	Buffer-field1,buffer-field2,start, and length can be one the following:
		Buffer-field1, 2, Start and	Description
		Length
		INPUT	Input Buffer
		Logical Field Name	Temporary Buffer
		(TEMP1)	Field
		Logical Field Name (LU1)	Lookup Buffer Field
		Logical Field Name (PR1)	Printer Buffer Field
		Logical Field Name	Array Buffer Field
		(Field1) [Index]
		Buffer-field1 only:
		String	ASCII string delimited
			by double quotes
		Buffer-field1, start, and
		length only:
		Number	Number prefixed by a
			number sign (#)
Rules:	Length and Start must be numeric.
Optional Fields	Invalid and valid labels are discussed in "Script Flow" at the beginning of this
	chapter. The exception is as follows:
	If buffer-field2overflows, start is greater than length, or invalid label is defined,
	control passes to that label.
Example 1	This example extracts a five-character substring starting at position 5 of LOCATION
	and copies it into TEMP1.
	MID LOCATION,TEMP1,#5,#5
Example 2	This example extracts a substring of LengthNum characters starting at position
	StartNum of LOCATION and copies it into TEMP1.
	MID LOCATION,TEMP1,StartNum,LengthNum
See Also	LEFT
	LSTRIP
	RIGHT
	RSTRIP

5-60Command Reference