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--- manual:chapter1:notation [2017/05/11 19:14]
smartin created
+++ manual:chapter1:notation [2017/05/24 18:49]
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 =====Notations and conventions=====
+====Keys====
+The HP50g has a total of 51 keys, most of which have multiple functions that can be activated with a modifier key (left shift, right shift, or ALPHA).  In this document, the following conventions are used when referring to various key press combinations:
+  * Keys are typeset in **bold**
+  * The majority of keys will be referred to by their alphanumeric label (**A** through **Z**), unless it makes sense by context to refer to another label on the key (for example, when referring to trigonometric functions, the **S**, **T**, and **U** keys may be referred to by their function names **SIN**, **COS**, and **TAN**, respectively).
+  * Number keys are referred to by their number (**0** through **9** and the decimal dot, **DOT**).
+  * The basic arithmetic keys are referred to as: **DIV** = divide (also **Z**), **MUL** = multiply, **SUB** = subtraction, **ADD** = addition.
+  * The special keys: **AL** (ALPHA), **ON**, **SP** (SPC), and **EN** (ENTER).
+  * The keypad arrow keys are referred to by: **LF** = left keypad arrow, **RT** = right keypad arrow, **UP** = up keypad arrow, **DN** = down keypad arrow.
+  * The shifted keys are **LS** = left shift and **RS** = right shift.
+  * The backspace key (also labeled 'DEL' and 'CLEAR') is **BK**.
+In order to reference a series of keys to be pressed in succession, a dash (**-**) will separate the keys.  Furthermore, since some key combinations require holding a key while pressing another, this action is denoted by a superscript <sup>**hold**</sup>.
+Here are some example key combinations:
+**LS-N** = left shift key followed by the 'N' key, which on the keyboard refers to the 'PRG' menu,
+**RS<sup>hold</sup>-A** = while holding right shift key, press the 'A' key,
+**ON<sup>hold</sup>-A<sup>hold</sup>-C** = press and hold the 'ON' key, then press and hold the 'A' key, and finally press the 'C' key.
+----
+====Variables, Commands, and other Objects====
+Variables, commands, objects or anything that is presented "as shown on the calculator screen", are highlighted in red, like this: ''VAR''.
+----
+====RPL code====
+Reverse Polish List (RPL) code on the HP50g is understood as such when enclosed using the chevrons <<  >>.  Within this document, all such code examples are highlighted.  So, for example, a RPL program to multiply the two numbers 24 and 42 would be shown like this:
+<code>« 24 42 * »</code>
+----