# (unit Attachment); (program Delimeters); (less Than) - HP 48gII Advanced User's Reference Manual

Graphing calculator.

and 0 ºF=459.67 ºR. But when ºC or ºF represents a difference in thermometer readings, then the
temperature is a unit with no additive constant: 1 ºC=1 K and 1 ºF=1 ºR.
The arithmetic operators +, –, %, %CH, and %T treat temperatures as differences, without any
additive constant. However, +, –, %CH, and %T require both arguments to be either absolute
(K and ºR), both ºC, or both ºF. No other combinations are allowed.
For more information on using temperature units with arithmetic functions, see the entry for +.
Access:
Input/Output:
+, %CH, %T
_

## (Unit attachment)

Type:
Unit attachment
Description: Unit attachment symbol: Attaches a unit type to a numeric value.
The hp49g+/hp48gII handles units by attaching the unit to a numeric value using the
underscore symbol. For example, the value of 3 kilometers is shown as 3_km, and is created by
entering 3 and then the underscore character, followed by attaching the kilometer unit.
...Ý
Access:
Input:
Numeric value
Output:
Numeric value ready for a unit attachment
« "

### (Program delimeters)

Type:
Object
Description: Program delimeter object: Enters a pair of program delimeter objects.
A program is a set of instructions enclosed by an open program object delimeter and a close
program object delimeter. These can be nested to have a program procedure enclosed within an
outer program object.
...å
Access:
Input:
None
Output:
A pair of program delimeters
<

### (Less than)

Type:
Function
Description: Less Than Function: Tests whether one object is less than another object.
The function < returns a true test result (1) if the first argument is less than the second
argument, or a false test result (0) otherwise.
%
REAL
Level 2/Argument 1
Level 1/Argument 2
x
x
'symb'
'symb
'
1
x
x_unit
'symb'
x_unit
( ´ is the left-shift of the Pkey).
y
'symb'
x
'symb
'
2
y_unit
y
x_unit
'symb'
(Ý is the right-shift of the -key).
(å is the right-shift of the +key).
Full Command and Function Reference 3-215
Level 1/Item 1
xy/100
'%(x,symb)'
'%(symb,x)'
'%(symb
, symb
)'
1
2
(xy/100)_unit
(xy/100)_unit
'%(symb,x_unit)'
'%(x_unit,symb)'