| ANI_STRUCTURE_tag | External structure |
| Animator_ALIGN | An interval (or bar) on the alignment timeline ending at a keyframe |
| Animator_AWIREFRAME | Actor wireframe |
| Animator_CAMERAPARAM | Additional properties related to the Camera's optical properties |
| Animator_DIRECTOR_tag | The Director structure represents a Director Actor's timeline segment |
| Animator_NODE | The main animator data structure |
| Animator_NURBS_tag | This structure describes each NURBS patch |
| Animator_NurbsProperties_Tag | Properties of a NURBS patch in a model |
| Animator_OBJECT | The main animator object structure |
| Animator_PARTICLESYSTEM_tag | Describes the properties of each partical system |
| Animator_PATHEDITCONTROL_tag | Define path control point properties |
| Animator_PATHPOINT | Define a point along a path |
| Animator_POSITION | An interval (or bar) on the position timeline ending at a keyframe |
| Animator_PREFERENCES_tag | Preferences structure |
| Animator_RAMIMAGE_tag | Holds an image map in memory |
| Animator_SFXDATA_tag | Structure used by global plugin animation effects. (used by animator and renderer) |
| Animator_SFXINFO_tag | Structure for plugin animation effects. (used by animator and renderer) |
| Animator_SIZE | An interval/segment (or bar) on the scaling timeline/channel ending at a keyframe |
| Animator_SKELETON | The skelton structure is associated with a ROBOT actor |
| Animator_SKY | The SKY Actor structure represents a timeline segment the backdrop in an animation |
| Animator_TOOLFLAGS_tag | ToolFlags structure |
| Animator_VECTOR4tag | One form of a 4 element vector |
| Animator_XIP_tag | Postprocess parameters |
| ATM_STRUCTURE_tag | Defines the properties of an ATM font based model |
| Boolean_TOOLEDGE | Internal structure used by Boolean modelling action (DLL) |
| Boolean_TOOLFACE | Internal structure used by Boolean modelling action (DLL) |
| Boolean_VTXADJ | Internal structure used by Boolean modelling action (DLL) |
| Boolean_WORKEDGE | Internal structure used by Boolean modelling action (DLL) |
| Boolean_WORKFACE | Internal structure used by Boolean modelling action (DLL) |
| CHARACTER_PROGRAM_tag | Defines the properties of an ATM character program |
| CPushPinBitmapSet | Class for DIRECT SHOW AVI ANIMATION BUILDER |
| CPushSourceBitmapSet | Class for DIRECT SHOW AVI ANIMATION BUILDER |
| Delaunay_FACET_tag | Internal structure used by Delaunay modelling action (DLL) |
| Designer_BEZIER_CURVE_tag | Provides properties of Bezier curves objects in the Designer |
| Designer_EDGE_tag | Designer Edge structure |
| Designer_EFACE | Structure used as part of the Hidden Line quick Draw |
| Designer_FACE_tag | Face (Polygon) structure |
| Designer_FACEATTRIBS_tag | Face attributes structure |
| Designer_IMAGEMAP_tag | Structure represents an Image/Texture map |
| Designer_KEY_POINTS_tag | Key points used in the represent the Object origin etc |
| Designer_MATERIALAXIS_tag | An axis for materials |
| Designer_NURBS_tag | NURBS patch |
| Designer_NURBSProperties_tag | Nurbs structure properties |
| Designer_NURBSSurfSample_tag | NURBS surface sample |
| Designer_OBJECT | Structure used as part of the Hidden Line quick Draw |
| Designer_PREFERENCES_tag | Describes the Designer module's preferences for screen layout etc |
| Designer_PRIMITIVE_tag | Describes the Designer primites used during the building of primitive shapes with the primites tool |
| Designer_RAMIMAGE_tag | Design Ram Image |
| Designer_RFACE | Structure used as part of the Hidden Line quick Draw |
| Designer_RVERTEX | Structure used as part of the Hidden Line quick Draw |
| Designer_SKELETON_tag | Designer Skeleton structure |
| Designer_SURFACEMATERIAL_tag | The main surface mmaterial data structure |
| Designer_VERTEX_tag | Designer Vertex structure |
| Designer_WIREFRAME_tag | Designer wireframe approximation |
| Designer_XSHADER_tag | Shader parameters are stored in this structure |
| DesignerGLMAPtag | Structure used in Designer OpenGL view window |
| GifColorType | Structure used by GIF image code |
| GifFileType | Structure used by GIF image code |
| GifHashTableType | Structure used by GIF image code |
| Orient_VTXADJ | Internal structure used by orientation modelling action (DLL) |
| Orient_WORKFACE | Internal structure used by orientation modelling action (DLL) |
| Renderer_AXIS_tag | An AXIS structure |
| Renderer_FACE | Polygonal face structure |
| Renderer_GROUND_tag | GROUND structure |
| Renderer_IMAP_tag | Image map structure, as used in renderer |
| Renderer_LIGHT_tag | Light structure |
| Renderer_MATL_tag | Material structure as used in Renderer |
| Renderer_NURBS_tag | NURBS structure |
| Renderer_NurbsProperties_tag | NURBS properties structure |
| Renderer_NurbsSurfSample_tag | Nurbs surface structure |
| Renderer_OBJECT_tag | In Renderer this "Object" structure defines a MESH model |
| Renderer_PARTICLE_tag | Particle structure |
| Renderer_PARTICLESYSTEM_tag | Particle Actor srtucture |
| Renderer_SCREENBUFFER_tag | Framebuffer structure |
| Renderer_SHADER_tag | External shader data structure |
| Renderer_SKELETON | Skeleton structure used in Renderer |
| Renderer_SKY_tag | SKY structure |
| Renderer_TFACE_tag | Polygonal face structure used by the Ray-tracer to trace a ray through the face used by ray tracing to allow subdivision subdivided scene |
| Renderer_TVERTEX_tag | Vertex structure used by ray-tracer |
| Renderer_VECTOR4_tag | Vector structure used by NURBS code |
| Renderer_VERTEX | Vertex structure |
| Renderer_XIMAGE_tag | Renderer structure for passing pointers to the Renderer's global variables and functions used by Image PostProcessing |
| SfxBound | Class to allow OpenFX to use the Visualisation toolkit |
| SfxEdgeReader | Class to allow OpenFX to use the Visualisation toolkit |
| SfxPointReader | Class to allow OpenFX to use the Visualisation toolkit |
| Simplify_SELECTEDEDGE | Internal structure used by structure simplification modelling action (DLL) |
| Simplify_SELECTEDFACE | Internal structure used by structure simplification modelling action (DLL) |
| Simplify_VTYADJ | Internal structure used by structure simplification modelling action (DLL) |
| THD_tag | USED FOR DISPATCHING threadsd of execution |
| TTF_STRUCTURE_tag | Defines the properties of a TTF font based model |
| TWO_INTEGERS_ATM_tag | Defines the properties of two integers used for ATM Dialog |
| VECTOR4_design_tag | Vector structure with 4 elements in the designer |
| X__MEMORY_MANAGERtag | Allows DLL's to allocate and free ram by calling back to caller |
| X__SHADERtag | Structure used to provide plugins with access to Renderer's internal variables and functions |
| X__STRUCTUREtag | External structure for making Designer global variables and function available to plugin tools and actions. |
| XIP_RENDER_tag | External Image Processor structure |
1.5.6