Adobe is an American multinational computer software company, and the original creator of the PDF file Format.
Adobe
A PDF file can contain several different types of embedded font. Here is an interesting font Object from a PDF created by the DocuCorp... The PDF text stream contains the instructions to draw the actual contents of the PDF. One of these instructions is the Tj command, which... In theory the PDF file format is specified in detail and is very precise. In practice, you meet alsorts of ‘interesting problems’ – the... People often ask how you can have a broken PDF file? I have looked at a file which gives a nice example so here... One of my favourite features of the PDF file format is it’s flexibility. It goes way beyond a document format, it offers lots of... 
