The next step is to add a source file. First check that Watcom has configured it's text
editor correctly. Click File then Set Text Editor. In the pop-up window that appears the first line should have
c:\watcom\binnt\viw. You can enter the path to any other editor, for example notepad or wordpad on windows. If you change your editor and want to change it back, open this pop-up again and click the
default button.
On the IDE menu, click Sources then New Source. In the Directories box, browse to where you want to store your project files. Before you do this, it's probably easier creating the folders with Windows Explorer. I use the path c:\development\c\tutorials\lesson one. Now type in the name of the first file, example1.c in the File Name box, click the Add button then click the Close button. You should now see something like the image above.
On the next page : Enter the first program.