Keywords are predefined, reserved identifiers that have special meanings. You cannot use any keywords in a program as variable, constant, and label names. Variable and constant names must differ from keywords. Keywords are not case-sensitive. Therefore, you cannot use them as variable and constant names by changing the case of the letters used in them.

Table 3-3 lists the keywords defined in the AIT language.

Table 3-3 Keywords defined in the AIT language

No.	Keyword	No.	Keyword	No.	Keyword
1	bool	2	break	3	case
4	const	5	continue	6	default
7	define	8	do	9	ECompany
10	else	11	endif	12	endswitch
13	ERROR	14	EUser	15	float
16	for	17	goto	18	IconGroupName
19	if	20	InstallDirectory	21	InstallDrive
22	InstallerName	23	integer	24	loop
25	MAIN	26	next	27	PACKAGE_INFO
28	PackageID	29	Product	30	ScriptFileVersion
31	SerialNumber	32	string	33	switch
34	Version	35	while	-	-

Legend:

-: None

Other keywords include API names, predefined AIT macro names, and several Win32 error codes.