Shell Document View
shdocvw.dll provides API to view OLE documents. It is in fact the main DLL of Internet Explorer. Its most common use is WebBrowser control.
WebBrowser control allows an application to embed different documents. It is mostly used for HTML documents. WebBrowser checks the type of the document, creates its instance and views it. Note that HTML rendering has nothing to do with WebBrowser control, but it's done by the document object embedded in WebBrowser (see MsHtml).
This is true for Wine >= 0.9.17. Older versions use Mozilla ActiveX control by default.
Note: Wine no longer uses Mozilla ActiveX control. We use raw Gecko API in mshtml.dll instead.
Having a quick description of the InternetExplorer object here would be great