Predefined Constants
==============================

HSL has various predefined keywords which can be used within methods and libraries without
needing to define them. They will be associated with the values shown in the table below

+-----------------------+-------+----------------------------------------------------+
| Keyword               | Value | Meaning                                            |
+-----------------------+-------+----------------------------------------------------+
| hslTrue               | 1     | True                                               |
+-----------------------+-------+----------------------------------------------------+
| hslFalse              | 0     | False                                              |
+-----------------------+-------+----------------------------------------------------+
| hslInfinite           | n/a   | Infinite time-out value                            |
+-----------------------+-------+----------------------------------------------------+
| hslOKOnly             | 0     | Display OK button only                             |
+-----------------------+-------+----------------------------------------------------+
| hslOKCancel           | 1     | Display OK and Cancel button                       |
+-----------------------+-------+----------------------------------------------------+
| hslAbortRetryIgnore   | 2     | Display Abort, Retry and Ignore button             |
+-----------------------+-------+----------------------------------------------------+
| hslYesNoCancel        | 3     | Display Yes, No and Cancel button                  |
+-----------------------+-------+----------------------------------------------------+
| hslYesNo              | 4     | Display Yes and No button                          |
+-----------------------+-------+----------------------------------------------------+
| hslRetryCancel        | 5     | Display Retry and Cancel button                    |
+-----------------------+-------+----------------------------------------------------+
| hslDefButton1         | 0     | The first button is the default button.            |
|                       |       | hslDefButton1 is the default unless hslDefButton2  |
|                       |       | or hslDefButton3 is specified                      |
+-----------------------+-------+----------------------------------------------------+
| hslDefButton2         | 256   | The second button is the default button            |
+-----------------------+-------+----------------------------------------------------+
| hslDefButton3         | 512   | The third button is the default button             |
+-----------------------+-------+----------------------------------------------------+
| hslError              | 16    | Display Error Message icon                         |
+-----------------------+-------+----------------------------------------------------+
| hslQuestion           | 32    | Display Warning Query icon                         |
+-----------------------+-------+----------------------------------------------------+
| hslExclamation        | 48    | Display Warning Message icon                       |
+-----------------------+-------+----------------------------------------------------+
| hslInformation        | 64    | Display Information Message icon                   |
+-----------------------+-------+----------------------------------------------------+
| hslOK                 | 1     | OK button was selected                             |
+-----------------------+-------+----------------------------------------------------+
| hslCancel             | 2     | Cancel button was selected                         |
+-----------------------+-------+----------------------------------------------------+
| hslAbort              | 3     | Abort button was selected                          |
+-----------------------+-------+----------------------------------------------------+
| hslRetry              | 4     | Retry button was selected                          |
+-----------------------+-------+----------------------------------------------------+
| hslIgnore             | 5     | Ignore button was selected                         |
+-----------------------+-------+----------------------------------------------------+
| hslYes                | 6     | Yes button was selected                            |
+-----------------------+-------+----------------------------------------------------+
| hslNo                 | 7     | No button was selected                             |
+-----------------------+-------+----------------------------------------------------+
| hslInteger            | "i"   | The input value is an integer                      |
+-----------------------+-------+----------------------------------------------------+
| hslFloat              | "f"   | The input value is a float                         |
+-----------------------+-------+----------------------------------------------------+
| hslString             | "s"   | The input value is a string                        |
+-----------------------+-------+----------------------------------------------------+
| hslRead               | "r"   | Opens the file for reading. The file must exist    |
+-----------------------+-------+----------------------------------------------------+
| hslWrite              | "w"   | Opens an empty file for writing. If the file       |
|                       |       | already exists its contents are deleted            |
+-----------------------+-------+----------------------------------------------------+
| hslAppend             | "a"   | Opens the file for writing at the end of the file. |
|                       |       | If the file does not exist, a new file is created  |
+-----------------------+-------+----------------------------------------------------+
| hslHide               | 1     | Hides the window and activates another window      |
+-----------------------+-------+----------------------------------------------------+
| hslShow               | 2     | Activates the window and displays it in its        |
|                       |       | current size and position                          |
+-----------------------+-------+----------------------------------------------------+
| hslShowMaximized      | 3     | Activates the window and displays it as a          |
|                       |       | maximized window                                   |
+-----------------------+-------+----------------------------------------------------+
| hslShowMinimized      | 4     | Activates the window and displays it as a          |
|                       |       | minimized window                                   |
+-----------------------+-------+----------------------------------------------------+
| hslSynchronous        | 1     | The execution of the running HSL program is        |
|                       |       | blocked until the program to execute terminates    |
+-----------------------+-------+----------------------------------------------------+
| hslAsynchronous       | 2     | The execution of the running HSL program will not  |
|                       |       | be blocked until the program to execute terminates |
+-----------------------+-------+----------------------------------------------------+
| hslCSVDelimited       | ","   | Fields in the file data source are delimited by    |
|                       |       | commas (default)                                   |
+-----------------------+-------+----------------------------------------------------+
| hslTabDelimited       | "\t"  | Fields in the file data source are delimited by    |
|                       |       | tabs                                               |
+-----------------------+-------+----------------------------------------------------+
| hslFixedLength        | ""    | Fields in the text file are of fixed width         |
+-----------------------+-------+----------------------------------------------------+
|                       | "*"   | Fields in the file data source are delimited by    |
|                       |       | asterisks. The asterisk can be substituted for any |
|                       |       | character except the double quotation mark (")     |
+-----------------------+-------+----------------------------------------------------+
| hslAsciiText          | "\n"  | Fields in the file data source are delimited by    |
|                       |       | newline characters                                 |
+-----------------------+-------+----------------------------------------------------+
| hslCurrent            | 0     | Starts at the current row (default)                |
+-----------------------+-------+----------------------------------------------------+
| hslFirst              | 1     | Starts at the first row                            |
+-----------------------+-------+----------------------------------------------------+
| hslLast               | 2     | Starts at the last row                             |
+-----------------------+-------+----------------------------------------------------+