| Action | Keywords |
| Convert between data types. | CBool, CByte, CCur, CDate, CDbl, CDec, CInt, CLng, CSng, CStr, CVar, CVErr, Fix, Int |
| Set intrinsic data types. | Boolean, Byte, Currency, Date, Double, Integer, Long, Object, Single, String, Variant (default) |
| Verify data types. | IsArray, IsDate, IsEmpty, IsError, IsMissing, IsNull, IsNumeric, IsObject |