The description of tmd format expansion
A tmd file is a document created by TextMaker, a word processing program which is a part of SoftMaker Office. The tmd format supports page formatting properties, drawn objects, images and text. Typically, the tmd file is used to store authored documents.
If you want to apply TextMaker Viewer for opening the tmd file objects, it should be noted, that TextMaker Viewer supports tmd files from TextMaker version 6 and later.