Macros

Misc

@ERROR - Stores the state of the last error which can be useful to find out exactly what happened. @CURRENCY - Stores the local currency symbol that the computer is using such as $ or £ etc. @DATETIMENOW - Stores the current time (Its not a good idea to parse this yourself instead of use SPrintf( <expression>, <expressions>... ) to convert it into useable data).

Math

@PI - Mathematical constant that is the ratio of any circle's circumference to its diameter

@E - Represents the natural logarithmic base, specified by the constant, e.