Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....vsd" ); \ # get Visio page $page = $diagram -> getPages ()...-> getPage ( 0 ); $layers = $page -> getPageSheet () -> getLayers...