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.

The following table lists the keywords defined in the AIT language.

Table 3-3 Keywords defined in the AIT language

No.	Keyword
1	bool
2	break
3	case
4	const
5	continue
6	default
7	define
8	do
9	else
10	endif
11	endswitch
12	ERROR
13	float
14	for
15	goto
16	IconGroupName
17	if
18	InstallDirectory
19	InstallDrive
20	InstallerName
21	integer
22	JCompany
23	JUser
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

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