HP 48gII Graphing, 50g Graphing HEAD, HELP, HEADER→, →HEADER

Access:	!°LLRUN & DEBUG HALT			( °is the left-shift of the Nkey).
Input/Output:	None
See also:	CONT, KILL
HEAD	Command
Type:
Description:	First Listed Element Command: Returns the first element of a list or string.
Access:	!°LCHARS LHEAD		( °is the left-shift of the Nkey).
	!°LIST ELEMEN LHEAD		( °is the left-shift of the Nkey).
	…±LHEAD		(±is the right-shift of the Nkey).
Input/Output:
		Level 1/Argument 1			Level 1/Item 1
		{ obj1, ... ,objn }		→	obj1
		“string”		→	“element1”
	"Dead"
Example 1:		HEAD returns "D".
Example 2:	The following program takes a list of coordinates { A B C } that define a right triangle, and finds
	the length of the hypotenuse AC:
	« DUP HEAD SWAP REVLIST HEAD - ABS »
	For example, entering { (0,0) (0,3) (3,4) } returns 5.
See also:	TAIL
HEADER→	Command
Type:
Description:	Header size: Returns the current size of the header in lines.
Access:	…µHEADER→
Input/Output:
		Level 1/Argument 1			Level 1/Item 1
				→	Header size
See also:	→HEADER
→HEADER	Command
Type:
Description:	Header size: Sets the current size of the header in lines: to 0, 1, or 2 lines.
Access:	…µ→HEADER
Input/Output:
		Level 1/Argument 1			Level 1/Item 1
		Header size		→
See also:	HEADER→
HELP
Type:	Command
Description:	Similar to CASCMD, displays a list of CAS operations. Selecting one with OK displays help for it,
	an example of the operation, and the option to copy the example to the command line. More
	details are given in Appendix C and Appendix H of the User’s Guide.
Access:	Catalog, …µ, or tools IL
See also:	CASCMD

Full Command and Function Reference 3-103