Most data in Zeolite is managed by dynamically-typed variables, represented by ZVAR handles, and manipulated using the set of functions listed on the function reference page.
The tables below present the list of valid variable types (including classes) by their 'token' (defined in the Zeolite_defines.h), the numeric value of that token, and by the string returned by the ztype_GetName function.
| Name string | Token | VarID | Description |
| [NULL] | VarID_INVALID | 0 | Used for invalid variable handles, or uninitialised variables. |
| “void” | VarID_void | 1 | A variable with no data (but has a name). |
| “variant” | VarID_variant | 2 | A variable whose value is another variable, the type of which is free to change. This data type is and should only be used for variable input extension functions. |
| “bool” | VarID_bool | 3 | Boolean value. Data is a C/C++ 'bool' type. |
| “char” | VarID_char | 4 | 8-bit signed integer and/or ASCII character. |
| “byte” | VarID_byte | 5 | 8-bit unsigned integer. |
| “ubyte” | VarID_ubyte | 5 | Same as 'byte'. |
| “sbyte” | VarID_sbyte | 104 | 8-bit signed integer. |
| “short” | VarID_short | 6 | 16-bit signed integer. |
| “ushort” | VarID_ushort | 105 | 16-bit unsigned integer. |
| “int” | VarID_int | 7 | 32-bit signed integer. |
| “uint” | VarID_uint | 106 | 32-bit unsigned integer. |
| “int64” | VarID_int64 | 8 | 64-bit integer. |
| “float” | VarID_float | 9 | 32-bit floating-point variable. |
| “double” | VarID_double | 10 | 64-bit floating-point variable. |
| “colour” | VarID_colour | 13 | 24-bit colour variable. Data is a ColourPixel struct. |
| “vector3c” | VarID_vector3c | 101 | A three-component 8-bit signed integer vector. Data is a vector3c struct. |
| “vector3i” | VarID_vector3i | 102 | A three-component 32-bit signed integer vector. Data is a vector3i struct. |
| “vector3f” | VarID_vector3f | 14 | A three-component floating-point vector. Data is a vector3f struct. |
| “vector3d” | VarID_vector3d | 103 | A three-component double-precision floating-point vector. Data is a vector3d struct. |
| “vector4c” | VarID_vector4c | 107 | A four-component 8-bit signed integer vector. Data is a vector4c struct. |
| “vector4i” | VarID_vector4i | 108 | A four-component 32-bit signed integer vector. Data is a vector4i struct. |
| “vector4f” | VarID_vector4f | 109 | A four-component floating-point vector. Data is a vector4f struct. |
| “vector4d” | VarID_vector4d | 110 | A four-component double-precision floating-point vector. Data is a vector4d struct. |
| “matrix3f” | VarID_matrix3f | 111 | A 3×3-component single precision floating point matrix. Data is a matrix3f struct. |
| “voidptr” | VarID_voidptr | 20 | Memory address (32 bit). Data is a C/C++ 'void*' type. |
| “varid” | VarID_varid | 23 | A 32-bit integer, containing one of the VarID values enumerated in this table. |
| “hvar” | VarID_hvar | 25 | A variable handle. Data is a ZVAR handle to another variable. |
| Name string | Token | VarID | Wrapper class | Description |
| “map” | VarID_map | 60 | CzMap | Map variable. |
| “varlist” | VarID_varlist | 31 | CzList | List variable. |
| “string” | VarID_string | 11 | CzStr | String variable. |
| “format” | VarID_format | 100 | CzFormat | File format variable. |
| “buffer” | VarID_buffer | 15 | CzBuffer | Buffer variable. |
| “filesel” | VarID_filesel | 300 | CzFileSel | A file open/save dialog box with filter options, default directories, etc. |
| “dirsel” | VarID_dirsel | 301 | CzDirSel | Dialog box by which users can browse for a directory of the file system. |
| “combosel” | VarID_combosel | 302 | CzComboSel | Dialog box by which users can select from a list of options. |
| “climate” | VarID_climate | 340 | CzClimate | Climate variable. |
| “landtype” | VarID_landtype | 341 | CzLandType | LandType variable. |
| “progbox” | VarID_progbox | 600 | CzProgBox | Dialog box for displaying progress. |
| “zeofunc” | VarID_zeofunc | 510 | CzFunc | Wrapper for a Zeolite extension function. |
