Constants are very similar to normal variables, except for the fact that their value cannot be changed once it has been set. They can be used to simplify formula and make them more readable by using a word to represent a value. When a formula is evaluated, the constants are simply replaced by the value they represent.

Example: Instead of using the formula area = 3.141 * radius * radius, we can replace the 3.141 with the predefined constant PI. We end up with the formula area = PI * radius * radius, which has exactly the same result as the first, but is easier to understand at a glance.

Predefined Constants

Name	Value	Possible Uses
TRUE or YES	Boolean constants	Comparison operations, for example IF (x <= y) = FALSE THEN ...
FALSE or NO
SQRT2	Square root of 2 (i.e. 1.414214)	Typically used in trigonometric formulas
PI	3.141593	Formulas involving circles or arcs
TAB	A horizontal tab character	Formatting text, e.g. on labels
ENDL	A newline character
RND	A random number between 0 and 1	This is a constant that acts the same as the Rand function. Can be exactly 0 but never exactly 1
#N/A or NA	Indicates "Not Available"	Can be returned by User Defined Functions and checked for by using the IsNA function
#ERR!	Represents an error condition	Can also be returned by User Defined Functions and checked for with IsErr
#EMPTY	An empty, blank, or zero value	Any value which is zero (in any units, like 0.0 cm) or blank (like the empty string "")

Folders

Name	Value
BackupFolder BitmapFolder DataFolder LibraryFolder ReportFolder TableFolder TemplateFolder ToolDataFolder	These variables represent the location of the corresponding CabMasterPro folders. The folders could be anywhere, with each one being specified in the File Locations dialog. A default install will put these folders into place as subfolders of the ProgramFolder, which is the folder where you install CabMasterPro. But in practice, users can relocate these folders, e.g. to a network folder. So you should use these variables when referring to files, to ensure they are found in the correct location.
ProgramFolder	Represents the location of the CabMasterPro folder e.g. the value (in a typical install) is "C:\AllMasterSoftware\CabMasterPro".
DocumentPath DocumentTitle	DocumentPath is the full path with filename for the current drawing e.g. c:\mydrawings\greenhouse.qid DocumentTitle is just the subname of the DocumentPath e.g. "greenhouse"
DrawingFolder DrawingSubfolder	These are slightly different in that, though still a CabMasterPro folder, they can vary for each drawing. DrawingFolder refers to the directory you have saved your drawing to (by default the same as DataFolder (e.g. "c:\Data"), but you can save in other locations). DrawingSubfolder is a folder under DrawingFolder with this drawing's name (e.g. "c:\Data\Q1234.qid").
BasedOnLibraryFolder	If the currently open library has a catalog, the catalog can be based on a library in another folder. In that case, BasedOnLibraryFolder will give you the path for that base library. Usually, however, this returns the same string as LibraryFolder.
MyDocumentsFolder	Returns the full path to the Windows Documents folder. It usually depends on the Windows username you have logged in as, and would typically be something like “C:\Users\daveb\Documents”
MyDocumentsProductFolder	Returns the full path to a subfolder of the Windows Documents folder, with the product family name. This would typically be something like "C:\Users\daveb\Documents\AllMasterSoftware".
PictureFolder	Alias of BitmapFolder

Lock Information

Name	Value	Possible Uses
HasComponents	Boolean	Tests if current lock supports component breakdowns (cutting lists). Returns true if it has support and false if it does not.
HasCompReports	Boolean	Tests if product can report components individually rather than aggregated (as in designer only products with no cutting lists).
HasDoorprofiler	Boolean	Tests if current lock supports Door Profiler extensions to machining. Returns true if it has support and false if it does not.
HasMachView	Boolean	Tests if current lock supports the MachView addon.
HasMachining	Boolean	Tests if current lock supports machining (Machine Center). Returns true if it has support and false if it does not.

Date and Time

Name	Value
Create_DTM	Creation date and time for current drawing
Lastsave_DTM	Date and time this drawing was last saved
Now	The date and time now

Colours

Name	Value	Possible Uses
BLACK		These constants return the RGB (red-green-blue) codes for the specified colour. A sample of each colour is given in the Value column to the left. They can be used in place of an RGB function, for example RGB(255,0,255) can be replaced with the constant MAGENTA, which is much more readable. See also PickColor function. These codes can be used in fields which usually open a Color Select dialog, such as line and fill style tabs. To formula-control these fields, click the colour preview square which opens the Colour Selection dialog, select Cancel on the dialog, and you will then be able to access the formula box for that colour field.
RED
GREEN
YELLOW
BLUE
CYAN
MAGENTA
WHITE
LIGHTGRAY
DARKRED
DARKGREEN
DARKBLUE
DARKCYAN
DARKGRAY
DARKYELLOW
DARKMAGENTA