Variables

Variables are containers for storing data values.

• Global and local variables are optional.
• To declare more than one variable, use a space.

The general rules for constructing names for variables (unique identifiers) are:

• Names can contain letters, digits and underscores (_).
• Names must begin with a letter.
• Names cannot contain whitespaces or special characters like !, #, %, etc.
• Reserved words (like keywords, such as null, true, false, etc.) cannot be used as names.
• Variables can be placed in globle variables, or in the dynamic body section of an menu, or in both.

All variables must be identified with unique names.
These unique names are called identifiers. Identifiers can be short names (like x and y) or more descriptive names (age, sum, totalVolume).

Note: It is recommended to use descriptive names in order to create understandable and maintainable code

Example

$hello_world = 'Hello World!'
$test_add1 = 5 + 6

item(title = hello_world cmd = msg(hello_world))

menu(title = test_add1)
{
	$test_sub1 = 11 - 5
	item(title = test_sub1)
}